USA: Illinois
Counties
The population of all counties in the State of Illinois according to census results and latest official estimates.
| Name | Status | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Estimate 2017-07-01 | |
|---|---|---|---|---|---|
| Adams | County | 68,261 | 67,103 | 66,234 | → |
| Alexander | County | 9,583 | 8,238 | 6,315 | → |
| Bond | County | 17,636 | 17,768 | 16,948 | → |
| Boone | County | 41,788 | 54,167 | 53,513 | → |
| Brown | County | 6,952 | 6,937 | 6,716 | → |
| Bureau | County | 35,496 | 34,978 | 33,243 | → |
| Calhoun | County | 5,079 | 5,089 | 4,833 | → |
| Carroll | County | 16,671 | 15,388 | 14,518 | → |
| Cass | County | 13,691 | 13,638 | 12,505 | → |
| Champaign | County | 179,687 | 201,081 | 209,399 | → |
| Christian | County | 35,380 | 34,800 | 33,102 | → |
| Clark | County | 16,995 | 16,335 | 15,767 | → |
| Clay | County | 14,417 | 13,815 | 13,269 | → |
| Clinton | County | 35,536 | 37,762 | 37,614 | → |
| Coles | County | 53,210 | 53,873 | 51,979 | → |
| Cook | County | 5,376,741 | 5,195,075 | 5,211,263 | → |
| Crawford | County | 20,460 | 19,817 | 18,961 | → |
| Cumberland | County | 11,311 | 11,048 | 10,908 | → |
| De Witt (DeWitt) | County | 16,802 | 16,561 | 15,942 | → |
| DeKalb | County | 88,941 | 105,160 | 104,733 | → |
| Douglas | County | 19,909 | 19,982 | 19,748 | → |
| DuPage | County | 904,594 | 916,889 | 930,128 | → |
| Edgar | County | 19,643 | 18,576 | 17,328 | → |
| Edwards | County | 6,978 | 6,721 | 6,486 | → |
| Effingham | County | 34,267 | 34,242 | 34,132 | → |
| Fayette | County | 21,810 | 22,142 | 21,784 | → |
| Ford | County | 14,227 | 14,081 | 13,280 | → |
| Franklin | County | 39,021 | 39,989 | 39,041 | → |
| Fulton | County | 38,244 | 37,069 | 35,110 | → |
| Gallatin | County | 6,426 | 5,589 | 5,080 | → |
| Greene | County | 14,766 | 13,886 | 13,174 | → |
| Grundy | County | 37,528 | 50,063 | 50,586 | → |
| Hamilton | County | 8,613 | 8,457 | 8,194 | → |
| Hancock | County | 20,171 | 19,104 | 18,020 | → |
| Hardin | County | 4,793 | 4,320 | 4,046 | → |
| Henderson | County | 8,176 | 7,328 | 6,795 | → |
| Henry | County | 51,032 | 50,485 | 49,328 | → |
| Iroquois | County | 31,340 | 29,718 | 27,876 | → |
| Jackson | County | 59,607 | 60,218 | 58,284 | → |
| Jasper | County | 10,113 | 9,698 | 9,578 | → |
| Jefferson | County | 40,051 | 38,825 | 38,179 | → |
| Jersey | County | 21,649 | 22,985 | 21,941 | → |
| Jo Daviess | County | 22,296 | 22,677 | 21,594 | → |
| Johnson | County | 12,877 | 12,582 | 12,900 | → |
| Kane | County | 404,508 | 515,258 | 534,667 | → |
| Kankakee | County | 103,825 | 113,449 | 109,605 | → |
| Kendall | County | 54,539 | 114,792 | 126,218 | → |
| Knox | County | 55,842 | 52,919 | 50,638 | → |
| La Salle | County | 111,599 | 113,915 | 110,067 | → |
| Lake | County | 644,682 | 703,404 | 703,520 | → |
| Lawrence | County | 15,449 | 16,903 | 16,168 | → |
| Lee | County | 36,062 | 36,031 | 34,406 | → |
| Livingston | County | 39,734 | 38,950 | 36,518 | → |
| Logan | County | 31,199 | 30,305 | 29,245 | → |
| Macon | County | 114,690 | 110,768 | 105,801 | → |
| Macoupin | County | 49,008 | 47,765 | 45,446 | → |
| Madison | County | 259,019 | 269,328 | 265,428 | → |
| Marion | County | 41,678 | 39,437 | 37,902 | → |
| Marshall | County | 13,159 | 12,640 | 11,730 | → |
| Mason | County | 16,034 | 14,666 | 13,715 | → |
| Massac | County | 15,163 | 15,429 | 14,344 | → |
| McDonough | County | 32,906 | 32,612 | 30,823 | → |
| McHenry | County | 259,524 | 308,820 | 309,122 | → |
| McLean | County | 150,384 | 169,572 | 172,290 | → |
| Menard | County | 12,483 | 12,705 | 12,245 | → |
| Mercer | County | 16,940 | 16,434 | 15,618 | → |
| Monroe | County | 27,625 | 32,957 | 34,097 | → |
| Montgomery | County | 30,646 | 30,104 | 28,790 | → |
| Morgan | County | 36,627 | 35,551 | 33,798 | → |
| Moultrie | County | 14,288 | 14,846 | 14,688 | → |
| Ogle | County | 51,001 | 53,497 | 51,063 | → |
| Peoria | County | 183,466 | 186,494 | 183,011 | → |
| Perry | County | 23,091 | 22,350 | 21,285 | → |
| Piatt | County | 16,385 | 16,727 | 16,445 | → |
| Pike | County | 17,362 | 16,430 | 15,821 | → |
| Pope | County | 4,397 | 4,470 | 4,325 | → |
| Pulaski | County | 7,333 | 6,161 | 5,509 | → |
| Putnam | County | 6,077 | 6,006 | 5,727 | → |
| Randolph | County | 33,897 | 33,476 | 32,423 | → |
| Richland | County | 16,291 | 16,233 | 15,901 | → |
| Rock Island | County | 149,390 | 147,546 | 144,808 | → |
| Saline | County | 26,752 | 24,913 | 24,102 | → |
| Sangamon | County | 188,974 | 197,465 | 196,452 | → |
| Schuyler | County | 7,181 | 7,544 | 7,035 | → |
| Scott | County | 5,539 | 5,355 | 5,002 | → |
| Shelby | County | 22,884 | 22,363 | 21,719 | → |
| St. Clair | County | 256,043 | 270,063 | 262,479 | → |
| Stark | County | 6,330 | 5,994 | 5,434 | → |
| Stephenson | County | 48,995 | 47,711 | 45,054 | → |
| Tazewell | County | 128,465 | 135,394 | 133,526 | → |
| Union | County | 18,311 | 17,808 | 17,000 | → |
| Vermilion | County | 83,929 | 81,625 | 77,909 | → |
| Wabash | County | 12,932 | 11,947 | 11,489 | → |
| Warren | County | 18,736 | 17,710 | 17,167 | → |
| Washington | County | 15,150 | 14,716 | 14,030 | → |
| Wayne | County | 17,149 | 16,760 | 16,495 | → |
| White | County | 15,381 | 14,665 | 13,938 | → |
| Whiteside | County | 60,662 | 58,498 | 56,118 | → |
| Will | County | 502,211 | 677,544 | 692,661 | → |
| Williamson | County | 61,300 | 66,362 | 67,328 | → |
| Winnebago | County | 278,441 | 295,264 | 284,778 | → |
| Woodford | County | 35,491 | 38,664 | 38,726 | → |
| Illinois | State | 12,419,927 | 12,831,574 | 12,802,023 |
Contents: Incorporated Places
The population of all incorporated places in the State of Illinois according to census results and latest official estimates.
| Name | Status | County | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Estimate 2017-07-01 | |
|---|---|---|---|---|---|---|
| Abingdon | City | Knox | 3,567 | 3,286 | 3,125 | → |
| Addieville | Village | Washington | 267 | 252 | 242 | → |
| Addison | Village | DuPage | 36,084 | 36,970 | 36,820 | → |
| Adeline | Village | Ogle | 139 | 85 | 81 | → |
| Albany | Village | Whiteside | 896 | 903 | 879 | → |
| Albers | Village | Clinton | 896 | 1,190 | 1,157 | → |
| Albion | City | Edwards | 2,022 | 1,993 | 1,918 | → |
| Aledo | City | Mercer | 3,624 | 3,646 | 3,477 | → |
| Alexis | Village | Warren / Mercer | 875 | 831 | 794 | → |
| Algonquin | Village | Kane / McHenry | 23,452 | 30,049 | 31,017 | → |
| Alhambra | Village | Madison | 639 | 681 | 661 | → |
| Allendale | Village | Wabash | 519 | 475 | 460 | → |
| Allenville | Village | Moultrie | 154 | 148 | 141 | → |
| Allerton | Village | Vermilion / Champaign | 292 | 291 | 277 | → |
| Alma | Village | Marion | 385 | 320 | 309 | → |
| Alorton | Village | St. Clair | 2,664 | 2,034 | 1,938 | → |
| Alpha | Village | Henry | 725 | 671 | 646 | → |
| Alsey | Village | Scott | 243 | 227 | 212 | → |
| Alsip | Village | Cook | 19,657 | 19,271 | 19,079 | → |
| Altamont | City | Effingham | 2,319 | 2,319 | 2,280 | → |
| Alto Pass | Village | Union | 392 | 391 | 376 | → |
| Alton | City | Madison | 30,332 | 27,918 | 26,725 | → |
| Altona | Village | Knox | 554 | 529 | 506 | → |
| Alvan | Village | Vermilion | 313 | 270 | 259 | → |
| Amboy | City | Lee | 2,637 | 2,500 | 2,344 | → |
| Anchor | Village | McLean | 166 | 146 | 141 | → |
| Andalusia | Village | Rock Island | 1,144 | 1,178 | 1,177 | → |
| Andover | Village | Henry | 593 | 578 | 573 | → |
| Anna | City | Union | 5,202 | 4,444 | 4,187 | → |
| Annawan | Town | Henry / Bureau | 859 | 878 | 855 | → |
| Antioch | Village | Lake | 8,793 | 14,463 | 14,235 | → |
| Apple River | Village | Jo Daviess | 384 | 365 | 350 | → |
| Arcola | City | Douglas | 2,838 | 2,914 | 2,882 | → |
| Arenzville | Village | Cass | 415 | 409 | 377 | → |
| Argenta | Village | Macon | 948 | 946 | 898 | → |
| Arlington | Village | Bureau | 210 | 193 | 184 | → |
| Arlington Heights | Village | Lake / Cook | 76,624 | 75,188 | 75,634 | → |
| Armington | Village | Tazewell | 369 | 343 | 325 | → |
| Aroma Park | Village | Kankakee | 770 | 741 | 701 | → |
| Arrowsmith | Village | McLean | 294 | 294 | 283 | → |
| Arthur | Village | Moultrie / Douglas | 2,216 | 2,288 | 2,253 | → |
| Ashkum | Village | Iroquois | 717 | 761 | 715 | → |
| Ashland | Village | Cass | 1,361 | 1,335 | 1,219 | → |
| Ashley | City | Washington | 625 | 536 | 496 | → |
| Ashmore | Village | Coles | 811 | 785 | 759 | → |
| Ashton | Village | Lee | 1,122 | 972 | 907 | → |
| Assumption | City | Christian | 1,256 | 1,168 | 1,093 | → |
| Astoria | Town | Fulton | 1,174 | 1,141 | 1,070 | → |
| Athens | City | Menard | 1,736 | 1,988 | 1,911 | → |
| Atkinson | Town | Henry | 994 | 972 | 953 | → |
| Atlanta | City | Logan | 1,656 | 1,692 | 1,629 | → |
| Atwood | Village | Piatt / Douglas | 1,316 | 1,222 | 1,182 | → |
| Auburn | City | Sangamon | 4,461 | 4,812 | 4,710 | → |
| Augusta | Village | Hancock | 679 | 587 | 553 | → |
| Aurora | City | Kendall / DuPage / Kane / Will | 143,002 | 197,948 | 200,965 | → |
| Ava | City | Jackson | 663 | 654 | 625 | → |
| Aviston | Village | Clinton | 1,242 | 1,951 | 2,098 | → |
| Avon | Village | Fulton / Warren | 945 | 799 | 738 | → |
| Baldwin | Village | Randolph | 435 | 373 | 349 | → |
| Banner | Village | Fulton | 215 | 189 | 185 | → |
| Bannockburn | Village | Lake | 1,438 | 1,583 | 1,579 | → |
| Bardolph | Village | McDonough | 279 | 251 | 239 | → |
| Barrington | Village | Lake / Cook | 10,132 | 10,314 | 10,297 | → |
| Barrington Hills | Village | Lake / Cook / Kane / McHenry | 3,943 | 4,213 | 4,219 | → |
| Barry | City | Pike | 1,411 | 1,318 | 1,263 | → |
| Bartelso | Village | Clinton | 590 | 599 | 604 | → |
| Bartlett | Village | Cook / DuPage / Kane | 36,560 | 41,159 | 41,149 | → |
| Bartonville | Village | Peoria | 6,322 | 6,471 | 6,250 | → |
| Basco | Village | Hancock | 97 | 98 | 91 | → |
| Batavia | City | DuPage / Kane | 23,839 | 26,182 | 26,563 | → |
| Batchtown | Village | Calhoun | 224 | 214 | 202 | → |
| Bath | Village | Mason | 342 | 333 | 314 | → |
| Bay View Gardens | Village | Woodford | 377 | 380 | 400 | → |
| Baylis | Village | Pike | 269 | 205 | 198 | → |
| Beach Park | Village | Lake | 10,421 | 13,674 | 13,995 | → |
| Beardstown | City | Cass | 5,807 | 6,127 | 5,581 | → |
| Beaverville | Village | Iroquois | 394 | 362 | 340 | → |
| Beckemeyer | Village | Clinton | 1,075 | 1,040 | 1,006 | → |
| Bedford Park | Village | Cook | 561 | 589 | 590 | → |
| Beecher | Village | Will | 2,205 | 4,359 | 4,472 | → |
| Beecher City | Village | Effingham | 493 | 463 | 457 | → |
| Belgium | Village | Vermilion | 455 | 409 | 389 | → |
| Belknap | Village | Johnson | 133 | 104 | 104 | → |
| Belle Prairie City | Town | Hamilton | 60 | 54 | 52 | → |
| Belle Rive | Village | Jefferson | 364 | 361 | 356 | → |
| Belleville | City | St. Clair | 42,183 | 44,314 | 41,649 | → |
| Bellevue | Village | Peoria | 1,839 | 1,999 | 1,962 | → |
| Bellflower | Village | McLean | 393 | 360 | 349 | → |
| Bellmont | Village | Wabash | 296 | 276 | 268 | → |
| Bellwood | Village | Cook | 20,535 | 19,055 | 19,019 | → |
| Belvidere | City | Boone | 20,885 | 25,646 | 25,181 | → |
| Bement | Village | Piatt | 1,748 | 1,730 | 1,684 | → |
| Benld | City | Macoupin | 1,547 | 1,556 | 1,450 | → |
| Bensenville | Village | Cook / DuPage | 20,505 | 18,352 | 18,330 | → |
| Benson | Village | Woodford | 409 | 429 | 410 | → |
| Bentley | Town | Hancock | 46 | 35 | 33 | → |
| Benton | City | Franklin | 6,947 | 7,087 | 6,964 | → |
| Berkeley | Village | Cook | 5,242 | 5,207 | 5,130 | → |
| Berlin | Village | Sangamon | 154 | 180 | 177 | → |
| Berwyn | City | Cook | 54,030 | 56,653 | 55,550 | → |
| Bethalto | Village | Madison | 9,517 | 9,521 | 9,327 | → |
| Bethany | Village | Moultrie | 1,308 | 1,352 | 1,275 | → |
| Big Rock | Village | Kane | 1,184 | 1,134 | 1,155 | → |
| Biggsville | Village | Henderson | 344 | 304 | 275 | → |
| Bingham | Village | Fayette | 114 | 83 | 81 | → |
| Bishop Hill | Village | Henry | 130 | 128 | 123 | → |
| Bismarck | Village | Vermilion | 572 | 579 | 551 | → |
| Blandinsville | Village | McDonough | 781 | 651 | 611 | → |
| Bloomingdale | Village | DuPage | 21,658 | 22,050 | 22,016 | → |
| Bloomington | City | McLean | 65,540 | 76,692 | 77,934 | → |
| Blue Island | City | Cook | 23,510 | 23,701 | 23,361 | → |
| Blue Mound | Village | Macon | 1,132 | 1,158 | 1,095 | → |
| Bluffs | Village | Scott | 761 | 715 | 666 | → |
| Bluford | Village | Jefferson | 796 | 688 | 670 | → |
| Bolingbrook | Village | DuPage / Will | 56,396 | 73,365 | 75,201 | → |
| Bondville | Village | Champaign | 497 | 448 | 446 | → |
| Bone Gap | Village | Edwards | 272 | 246 | 237 | → |
| Bonfield | Village | Kankakee | 389 | 382 | 361 | → |
| Bonnie | Village | Jefferson | 381 | 397 | 390 | → |
| Bourbonnais | Village | Kankakee | 15,350 | 18,645 | 18,420 | → |
| Bowen | Village | Hancock | 541 | 494 | 465 | → |
| Braceville | Village | Grundy / Will | 790 | 793 | 761 | → |
| Bradford | Village | Stark | 781 | 768 | 693 | → |
| Bradley | Village | Kankakee | 12,945 | 15,870 | 15,344 | → |
| Braidwood | City | Will | 5,276 | 6,217 | 6,219 | → |
| Breese | City | Clinton | 4,060 | 4,442 | 4,486 | → |
| Bridgeport | City | Lawrence | 2,094 | 1,886 | 1,741 | → |
| Bridgeview | Village | Cook | 15,346 | 16,444 | 16,335 | → |
| Brighton | Village | Macoupin / Jersey | 2,261 | 2,254 | 2,151 | → |
| Brimfield | Village | Peoria | 920 | 868 | 842 | → |
| Broadlands | Village | Champaign | 320 | 349 | 346 | → |
| Broadview | Village | Cook | 8,315 | 7,919 | 7,781 | → |
| Broadwell | Village | Logan | 170 | 145 | 138 | → |
| Brocton | Village | Edgar | 322 | 322 | 295 | → |
| Brookfield | Village | Cook | 19,034 | 18,974 | 18,694 | → |
| Brooklyn | Village | St. Clair | 665 | 749 | 711 | → |
| Brookport | City | Massac | 1,026 | 984 | 913 | → |
| Broughton | Village | Hamilton | 194 | 194 | 188 | → |
| Browning | Village | Schuyler | 133 | 137 | 127 | → |
| Browns | Village | Edwards | 172 | 134 | 129 | → |
| Brownstown | Village | Fayette | 692 | 759 | 739 | → |
| Brussels | Village | Calhoun | 145 | 141 | 134 | → |
| Bryant | Village | Fulton | 263 | 222 | 215 | → |
| Buckingham | Village | Kankakee | 237 | 300 | 285 | → |
| Buckley | Village | Iroquois | 591 | 600 | 552 | → |
| Buckner | Village | Franklin | 479 | 462 | 451 | → |
| Buda | Village | Bureau | 581 | 538 | 510 | → |
| Buffalo | Village | Sangamon | 498 | 503 | 485 | → |
| Buffalo Grove | Village | Lake / Cook | 43,127 | 41,501 | 41,226 | → |
| Bull Valley | Village | McHenry | 1,044 | 1,122 | 1,102 | → |
| Bulpitt | Village | Christian | 206 | 222 | 206 | → |
| Buncombe | Village | Johnson | 191 | 203 | 203 | → |
| Bunker Hill | City | Macoupin | 1,824 | 1,772 | 1,691 | → |
| Burbank | City | Cook | 27,899 | 28,925 | 28,793 | → |
| Bureau Junction | Village | Bureau | 363 | 321 | 309 | → |
| Burlington | Village | Kane | 570 | 624 | 633 | → |
| Burnham | Village | Cook | 4,282 | 4,206 | 4,159 | → |
| Burnt Prairie | Village | White | 55 | 52 | 49 | → |
| Burr Ridge | Village | Cook / DuPage | 10,686 | 10,569 | 10,818 | → |
| Bush | Village | Williamson | 266 | 275 | 270 | → |
| Bushnell | City | McDonough | 3,288 | 3,117 | 2,940 | → |
| Butler | Village | Montgomery | 192 | 180 | 172 | → |
| Byron | City | Ogle | 2,933 | 3,753 | 3,608 | → |
| Cabery | Village | Ford / Kankakee | 247 | 266 | 248 | → |
| Cahokia | Village | St. Clair | 16,374 | 15,238 | 14,151 | → |
| Cairo | City | Alexander | 3,633 | 2,831 | 2,281 | → |
| Caledonia | Village | Boone | 199 | 197 | 191 | → |
| Calhoun | Village | Richland | 222 | 172 | 168 | → |
| Calumet City | City | Cook | 38,963 | 37,116 | 36,633 | → |
| Calumet Park | Village | Cook | 8,539 | 7,831 | 7,757 | → |
| Camargo | Village | Douglas | 462 | 445 | 455 | → |
| Cambria | Village | Williamson | 1,308 | 1,228 | 1,280 | → |
| Cambridge | Village | Henry | 2,198 | 2,163 | 2,099 | → |
| Camden | Village | Schuyler | 99 | 86 | 80 | → |
| Camp Point | Village | Adams | 1,295 | 1,132 | 1,103 | → |
| Campbell Hill | Village | Jackson | 335 | 333 | 314 | → |
| Campton Hills | Village | Kane | 9,054 | 11,105 | 11,282 | → |
| Campus | Village | Livingston | 155 | 166 | 158 | → |
| Canton | City | Fulton | 15,209 | 14,704 | 13,865 | → |
| Cantrall | Village | Sangamon | 146 | 139 | 135 | → |
| Capron | Village | Boone | 1,117 | 1,376 | 1,355 | → |
| Carbon Cliff | Village | Rock Island | 1,731 | 2,087 | 2,013 | → |
| Carbon Hill | Village | Grundy | 393 | 345 | 338 | → |
| Carbondale | City | Jackson | 25,933 | 26,426 | 25,899 | → |
| Carlinville | City | Macoupin | 6,179 | 5,918 | 5,550 | → |
| Carlock | Village | McLean | 472 | 552 | 563 | → |
| Carlyle | City | Clinton | 3,428 | 3,287 | 3,189 | → |
| Carmi | City | White | 5,401 | 5,240 | 4,971 | → |
| Carol Stream | Village | DuPage | 40,671 | 39,729 | 39,989 | → |
| Carpentersville | Village | Kane | 31,370 | 37,691 | 38,162 | → |
| Carrier Mills | Village | Saline | 1,936 | 1,653 | 1,598 | → |
| Carrollton | City | Greene | 2,602 | 2,488 | 2,441 | → |
| Carterville | City | Williamson | 4,630 | 5,510 | 5,827 | → |
| Carthage | City | Hancock | 2,713 | 2,605 | 2,483 | → |
| Cary | Village | McHenry | 15,647 | 18,268 | 17,885 | → |
| Casey | City | Clark / Cumberland | 2,943 | 2,777 | 2,664 | → |
| Caseyville | Village | St. Clair | 4,333 | 4,215 | 4,066 | → |
| Catlin | Village | Vermilion | 2,112 | 2,041 | 1,968 | → |
| Cave-In-Rock | Village | Hardin | 341 | 318 | 289 | → |
| Cedar Point | Village | LaSalle | 264 | 277 | 261 | → |
| Cedarville | Village | Stephenson | 736 | 741 | 697 | → |
| Central City | Village | Marion | 1,378 | 1,172 | 1,132 | → |
| Centralia | City | Jefferson / Washington / Marion / Clinton | 14,396 | 13,034 | 12,452 | → |
| Centreville | City | St. Clair | 5,990 | 5,327 | 5,012 | → |
| Cerro Gordo | Village | Piatt | 1,441 | 1,403 | 1,339 | → |
| Chadwick | Village | Carroll | 503 | 551 | 523 | → |
| Champaign | City | Champaign | 70,118 | 81,269 | 87,432 | → |
| Chandlerville | Village | Cass | 704 | 553 | 507 | → |
| Channahon | Village | Grundy / Will | 7,645 | 12,561 | 12,805 | → |
| Chapin | Village | Morgan | 596 | 512 | 486 | → |
| Charleston | City | Coles | 21,209 | 21,833 | 20,996 | → |
| Chatham | Village | Sangamon | 8,614 | 11,602 | 12,624 | → |
| Chatsworth | Town | Livingston | 1,292 | 1,204 | 1,128 | → |
| Chebanse | Village | Iroquois / Kankakee | 1,149 | 1,062 | 994 | → |
| Chenoa | City | McLean | 1,854 | 1,783 | 1,735 | → |
| Cherry | Village | Bureau | 502 | 482 | 457 | → |
| Cherry Valley | Village | Winnebago / Boone | 2,189 | 3,162 | 3,078 | → |
| Chester | City | Randolph | 8,339 | 8,586 | 8,514 | → |
| Chesterfield | Village | Macoupin | 223 | 188 | 179 | → |
| Chicago | City | Cook / DuPage | 2,895,966 | 2,695,620 | 2,716,450 | → |
| Chicago Heights | City | Cook | 32,823 | 30,367 | 29,901 | → |
| Chicago Ridge | Village | Cook | 14,267 | 14,304 | 14,186 | → |
| Chillicothe | City | Peoria | 6,022 | 6,097 | 6,145 | → |
| Chrisman | City | Edgar | 1,310 | 1,343 | 1,246 | → |
| Christopher | City | Franklin | ... | 2,817 | 2,730 | → |
| Cicero | Town | Cook | 85,993 | 84,241 | 82,552 | → |
| Cisco | Village | Piatt | 286 | 261 | 250 | → |
| Cisne | Village | Wayne | 684 | 672 | 662 | → |
| Cissna Park | Village | Iroquois | 805 | 846 | 785 | → |
| Claremont | Village | Richland | 209 | 174 | 170 | → |
| Clarendon Hills | Village | DuPage | 7,753 | 8,429 | 8,712 | → |
| Clay City | Village | Clay | 1,013 | 962 | 918 | → |
| Clayton | Village | Adams | 853 | 709 | 735 | → |
| Clear Lake | Village | Sangamon | 263 | 229 | 225 | → |
| Cleveland | Village | Henry | 252 | 188 | 181 | → |
| Clifton | Village | Iroquois | 1,307 | 1,468 | 1,361 | → |
| Clinton | City | De Witt | 7,370 | 7,365 | 6,981 | → |
| Coal City | Village | Grundy / Will | 4,852 | 5,587 | 5,369 | → |
| Coal Valley | Village | Henry / Rock Island | 3,584 | 3,719 | 3,775 | → |
| Coalton | Village | Montgomery | 301 | 304 | 290 | → |
| Coatsburg | Village | Adams | 222 | 147 | 143 | → |
| Cobden | Village | Union | 1,153 | 1,157 | 1,101 | → |
| Coffeen | City | Montgomery | 729 | 685 | 650 | → |
| Colchester | City | McDonough | 1,510 | 1,399 | 1,317 | → |
| Coleta | Village | Whiteside | 160 | 164 | 157 | → |
| Colfax | Village | McLean | 989 | 1,061 | 1,026 | → |
| Collinsville | City | St. Clair / Madison | 24,673 | 25,558 | 24,703 | → |
| Colona | City | Henry | 5,067 | 5,135 | 5,133 | → |
| Colp | Village | Williamson | 226 | 225 | 221 | → |
| Columbia | City | St. Clair / Monroe | 7,875 | 9,688 | 10,274 | → |
| Columbus | Village | Adams | 112 | 99 | 96 | → |
| Compton | Village | Lee | 351 | 303 | 286 | → |
| Concord | Village | Morgan | 174 | 167 | 159 | → |
| Congerville | Village | Woodford | 580 | 477 | 490 | → |
| Cooksville | Village | McLean | 211 | 185 | 179 | → |
| Cordova | Village | Rock Island | 654 | 672 | 655 | → |
| Cornell | Village | Livingston | 503 | 467 | 448 | → |
| Cortland | Town | DeKalb | 2,090 | 4,271 | 4,336 | → |
| Coulterville | Village | Randolph | 1,149 | 945 | 902 | → |
| Country Club Hills | City | Cook | 16,211 | 16,544 | 16,564 | → |
| Countryside | City | Cook | 5,791 | 5,882 | 5,964 | → |
| Cowden | Village | Shelby | 614 | 615 | 580 | → |
| Crainville | Village | Williamson | 1,077 | 1,274 | 1,411 | → |
| Creal Springs | City | Williamson | 705 | 543 | 535 | → |
| Crescent City | Village | Iroquois | 637 | 615 | 574 | → |
| Crest Hill | City | Will | 13,481 | 20,829 | 21,175 | → |
| Creston | Village | Ogle | 537 | 662 | 647 | → |
| Crestwood | Village | Cook | 11,298 | 10,951 | 10,846 | → |
| Crete | Village | Will / Cook | 7,731 | 8,252 | 8,165 | → |
| Creve Coeur | Village | Tazewell | 5,444 | 5,464 | 5,194 | → |
| Crossville | Village | White | 741 | 745 | 702 | → |
| Crystal Lake | City | McHenry | 37,976 | 40,945 | 40,421 | → |
| Cuba | City | Fulton | 1,427 | 1,294 | 1,197 | → |
| Cullom | Village | Livingston | 556 | 560 | 524 | → |
| Curran | Village | Sangamon | 247 | 212 | 206 | → |
| Cutler | Village | Perry | 545 | 441 | 422 | → |
| Cypress | Village | Johnson | 268 | 234 | 234 | → |
| Dahlgren | Village | Hamilton | 514 | 525 | 507 | → |
| Dakota | Village | Stephenson | 508 | 506 | 474 | → |
| Dallas City | City | Hancock / Henderson | 1,028 | 945 | 888 | → |
| Dalton City | Village | Moultrie | 577 | 544 | 517 | → |
| Dalzell | Village | LaSalle / Bureau | 724 | 717 | 674 | → |
| Damiansville | Village | Clinton | 499 | 491 | 493 | → |
| Dana | Village | LaSalle | 171 | 159 | 154 | → |
| Danforth | Village | Iroquois | 579 | 604 | 563 | → |
| Danvers | Village | McLean | 1,182 | 1,154 | 1,115 | → |
| Danville | City | Vermilion | 34,557 | 33,019 | 31,424 | → |
| Darien | City | DuPage | 22,943 | 22,086 | 22,061 | → |
| Davis | Village | Stephenson | 665 | 677 | 635 | → |
| Davis Junction | Village | Ogle | 941 | 2,373 | 2,297 | → |
| Dawson | Village | Sangamon | 520 | 509 | 491 | → |
| De Land | Village | Piatt | 470 | 446 | 430 | → |
| De Pue | Village | Bureau | 1,840 | 1,833 | 1,719 | → |
| De Soto | Village | Jackson | 1,633 | 1,590 | 1,541 | → |
| De Witt | Village | De Witt | 185 | 184 | 180 | → |
| Decatur | City | Macon | 82,061 | 76,166 | 72,174 | → |
| Deer Creek | Village | Tazewell / Woodford | 602 | 704 | 672 | → |
| Deer Grove | Village | Whiteside | 47 | 48 | 46 | → |
| Deer Park | Village | Lake / Cook | 3,172 | 3,137 | 3,658 | → |
| Deerfield | Village | Lake / Cook | 18,487 | 18,227 | 18,946 | → |
| DeKalb | City | DeKalb | 39,017 | 44,127 | 43,193 | → |
| Delavan | City | Tazewell | 1,799 | 1,689 | 1,621 | → |
| Des Plaines | City | Cook | 56,900 | 58,385 | 58,193 | → |
| Detroit | Village | Pike | 95 | 83 | 79 | → |
| Diamond | Village | Grundy / Will | 1,386 | 2,527 | 2,508 | → |
| Dieterich | Village | Effingham | 608 | 621 | 607 | → |
| Divernon | Village | Sangamon | 1,197 | 1,172 | 1,130 | → |
| Dix | Village | Jefferson | 501 | 459 | 450 | → |
| Dixmoor | Village | Cook | 3,934 | 3,649 | 3,646 | → |
| Dixon | City | Lee | 15,835 | 15,747 | 15,202 | → |
| Dolton | Village | Cook | 25,460 | 23,074 | 22,793 | → |
| Dongola | Village | Union | 817 | 726 | 693 | → |
| Donnellson | Village | Bond / Montgomery | 258 | 210 | 199 | → |
| Donovan | Village | Iroquois | 340 | 304 | 284 | → |
| Dorchester | Village | Macoupin | 141 | 151 | 142 | → |
| Dover | Village | Bureau | 172 | 168 | 160 | → |
| Dowell | Village | Jackson | 438 | 408 | 388 | → |
| Downers Grove | Village | DuPage | 49,288 | 48,874 | 49,540 | → |
| Downs | Village | McLean | 850 | 1,005 | 974 | → |
| Du Bois | Village | Washington | 218 | 205 | 192 | → |
| Du Quoin | City | Perry | 6,492 | 6,109 | 5,810 | → |
| Dunfermline | Village | Fulton | 270 | 300 | 278 | → |
| Dunlap | Village | Peoria | 962 | 1,458 | 1,434 | → |
| Dupo | Village | St. Clair | 3,843 | 4,130 | 3,878 | → |
| Durand | Village | Winnebago | 1,151 | 1,450 | 1,400 | → |
| Dwight | Village | Grundy / Livingston | 4,365 | 4,260 | 4,038 | → |
| Eagarville | Village | Macoupin | 128 | 127 | 120 | → |
| Earlville | City | LaSalle | 1,752 | 1,701 | 1,610 | → |
| East Alton | Village | Madison | 6,874 | 6,301 | 6,100 | → |
| East Brooklyn | Village | Grundy | 111 | 106 | 100 | → |
| East Cape Girardeau | Village | Alexander | 431 | 387 | 313 | → |
| East Carondelet | Village | St. Clair | 298 | 503 | 474 | → |
| East Dubuque | City | Jo Daviess | 1,886 | 1,711 | 1,606 | → |
| East Dundee | Village | Cook / Kane | 2,978 | 2,868 | 3,192 | → |
| East Galesburg | Village | Knox | 842 | 816 | 788 | → |
| East Gillespie | Village | Macoupin | 234 | 270 | 266 | → |
| East Hazel Crest | Village | Cook | 1,607 | 1,545 | 1,527 | → |
| East Moline | City | Rock Island | 21,555 | 21,307 | 21,109 | → |
| East Peoria | City | Tazewell | 22,693 | 23,435 | 22,739 | → |
| East St. Louis | City | St. Clair | 31,667 | 26,917 | 26,662 | → |
| Easton | Village | Mason | 358 | 321 | 296 | → |
| Eddyville | Village | Pope | 143 | 103 | 100 | → |
| Edgewood | Village | Effingham | 529 | 440 | 430 | → |
| Edinburg | Village | Christian | 1,136 | 1,078 | 1,032 | → |
| Edwardsville | City | Madison | 21,703 | 24,367 | 24,967 | → |
| Effingham | City | Effingham | 12,446 | 12,349 | 12,589 | → |
| El Dara | Village | Pike | 89 | 78 | 75 | → |
| El Paso | City | Woodford / McLean | 2,804 | 2,810 | 2,754 | → |
| Elburn | Village | Kane | 2,768 | 5,602 | 5,863 | → |
| Eldorado | City | Saline | 4,520 | 4,133 | 3,994 | → |
| Eldred | Village | Greene | 223 | 201 | 189 | → |
| Elgin | City | Cook / Kane | 94,638 | 108,148 | 112,456 | → |
| Elizabeth | Village | Jo Daviess | 712 | 766 | 733 | → |
| Elizabethtown | Village | Hardin | 352 | 311 | 284 | → |
| Elk Grove Village | Village | Cook / DuPage | 34,666 | 33,125 | 32,776 | → |
| Elkhart | Village | Logan | 457 | 405 | 391 | → |
| Elkville | Village | Jackson | 981 | 928 | 881 | → |
| Elliott | Village | Ford | 332 | 295 | 273 | → |
| Ellis Grove | Village | Randolph | 400 | 366 | 348 | → |
| Ellisville | Village | Fulton | 85 | 96 | 92 | → |
| Ellsworth | Village | McLean | 270 | 195 | 195 | → |
| Elmhurst | City | Cook / DuPage | 42,946 | 44,135 | 46,662 | → |
| Elmwood | City | Peoria | 1,957 | 2,097 | 2,059 | → |
| Elmwood Park | Village | Cook | 25,408 | 24,883 | 24,537 | → |
| Elsah | Village | Jersey | 632 | 673 | 630 | → |
| Elvaston | Village | Hancock | 155 | 165 | 156 | → |
| Elwood | Village | Will | 1,609 | 2,279 | 2,265 | → |
| Emden | Village | Logan | 521 | 485 | 472 | → |
| Emington | Village | Livingston | 120 | 117 | 109 | → |
| Energy | Village | Williamson | 1,159 | 1,146 | 1,130 | → |
| Enfield | Village | White | 621 | 596 | 567 | → |
| Equality | Village | Gallatin | 739 | 595 | 541 | → |
| Erie | Village | Whiteside | 1,580 | 1,602 | 1,529 | → |
| Essex | Village | Kankakee | 576 | 802 | 771 | → |
| Eureka | City | Woodford | 5,048 | 5,325 | 5,334 | → |
| Evanston | City | Cook | 74,269 | 74,485 | 74,756 | → |
| Evansville | Village | Randolph | 741 | 701 | 660 | → |
| Evergreen Park | Village | Cook | 20,820 | 19,848 | 19,542 | → |
| Ewing | Village | Franklin | 312 | 307 | 301 | → |
| Exeter | Village | Scott | 72 | 65 | 61 | → |
| Fairbury | City | Livingston | 3,938 | 3,773 | 3,596 | → |
| Fairfield | City | Wayne | 5,485 | 5,154 | 5,029 | → |
| Fairmont City | Village | St. Clair / Madison | 2,431 | 2,629 | 2,486 | → |
| Fairmount | Village | Vermilion | 648 | 642 | 616 | → |
| Fairview | Village | Fulton | 498 | 522 | 483 | → |
| Fairview Heights | City | St. Clair | 14,981 | 17,078 | 16,588 | → |
| Farina | Village | Marion / Fayette | 558 | 518 | 505 | → |
| Farmer City | City | De Witt | 2,059 | 2,028 | 1,977 | → |
| Farmersville | Village | Montgomery | 766 | 724 | 689 | → |
| Farmington | City | Fulton / Peoria | 2,498 | 2,445 | 2,280 | → |
| Fayetteville | Village | St. Clair | 383 | 366 | 341 | → |
| Ferris | Village | Hancock | 169 | 156 | 146 | → |
| Fidelity | Village | Jersey | 111 | 114 | 107 | → |
| Fieldon | Village | Jersey | 271 | 239 | 221 | → |
| Fillmore | Village | Montgomery | 365 | 330 | 314 | → |
| Findlay | Village | Shelby | 711 | 683 | 644 | → |
| Fisher | Village | Champaign | 1,646 | 1,879 | 1,961 | → |
| Fithian | Village | Vermilion | 511 | 485 | 465 | → |
| Flanagan | Village | Livingston | 1,131 | 1,110 | 1,069 | → |
| Flat Rock | Village | Crawford | 429 | 331 | 315 | → |
| Flora | City | Clay | 5,216 | 5,065 | 4,882 | → |
| Florence | Village | Pike | 67 | 38 | 38 | → |
| Flossmoor | Village | Cook | 9,262 | 9,441 | 9,332 | → |
| Foosland | Village | Champaign | 90 | 101 | 100 | → |
| Ford Heights | Village | Cook | 3,476 | 2,770 | 2,731 | → |
| Forest City | Village | Mason | 291 | 246 | 231 | → |
| Forest Park | Village | Cook | 15,666 | 14,171 | 13,951 | → |
| Forest View | Village | Cook | 706 | 698 | 687 | → |
| Forrest | Village | Livingston | 1,230 | 1,220 | 1,159 | → |
| Forreston | Village | Ogle | 1,475 | 1,446 | 1,362 | → |
| Forsyth | Village | Macon | 2,465 | 3,490 | 3,529 | → |
| Fox Lake | Village | Lake / McHenry | 9,054 | 10,680 | 10,554 | → |
| Fox River Grove | Village | Lake / McHenry | 4,959 | 4,791 | 4,658 | → |
| Frankfort | Village | Cook / Will | 10,295 | 17,788 | 19,009 | → |
| Franklin | Village | Morgan | 631 | 610 | 582 | → |
| Franklin Grove | Village | Lee | 1,077 | 1,021 | 957 | → |
| Franklin Park | Village | Cook | 19,483 | 18,311 | 18,012 | → |
| Freeburg | Village | St. Clair | 3,975 | 4,374 | 4,262 | → |
| Freeman Spur | Village | Williamson / Franklin | 267 | 292 | 286 | → |
| Freeport | City | Stephenson | 26,389 | 25,637 | 24,091 | → |
| Fulton | City | Whiteside | 3,895 | 3,483 | 3,312 | → |
| Fults | Village | Monroe | 28 | 26 | 25 | → |
| Galatia | Village | Saline | 1,027 | 933 | 901 | → |
| Galena | City | Jo Daviess | 3,478 | 3,423 | 3,225 | → |
| Galesburg | City | Knox | 33,755 | 32,189 | 30,769 | → |
| Galva | City | Henry | 2,784 | 2,589 | 2,503 | → |
| Gardner | Village | Grundy | 1,439 | 1,463 | 1,401 | → |
| Garrett | Village | Douglas | 205 | 162 | 161 | → |
| Gays | Village | Moultrie | 270 | 281 | 263 | → |
| Geneseo | City | Henry | 6,427 | 6,623 | 6,533 | → |
| Geneva | City | Kane | 19,525 | 21,493 | 22,010 | → |
| Genoa | City | DeKalb | 4,176 | 5,186 | 5,220 | → |
| Georgetown | City | Vermilion | 3,550 | 3,474 | 3,290 | → |
| German Valley | Village | Stephenson | 486 | 463 | 435 | → |
| Germantown | Village | Clinton | 1,171 | 1,283 | 1,279 | → |
| Germantown Hills | Village | Woodford | 2,282 | 3,397 | 3,460 | → |
| Gibson City | City | Ford | 3,352 | 3,415 | 3,307 | → |
| Gifford | Village | Champaign | 827 | 972 | 1,083 | → |
| Gilberts | Village | Kane | 1,294 | 6,879 | 8,073 | → |
| Gillespie | City | Macoupin | 3,414 | 3,319 | 3,142 | → |
| Gilman | City | Iroquois | 1,833 | 1,814 | 1,702 | → |
| Girard | City | Macoupin | 2,244 | 2,103 | 2,015 | → |
| Gladstone | Village | Henderson | 287 | 281 | 269 | → |
| Glasford | Village | Peoria | 1,077 | 1,022 | 981 | → |
| Glasgow | Village | Scott | 173 | 141 | 134 | → |
| Glen Carbon | Village | Madison | 10,587 | 12,936 | 12,985 | → |
| Glen Ellyn | Village | DuPage | 27,164 | 27,771 | 28,045 | → |
| Glencoe | Village | Cook | 8,734 | 8,720 | 8,900 | → |
| Glendale Heights | Village | DuPage | 31,870 | 34,212 | 34,058 | → |
| Glenview | Village | Cook | 41,739 | 44,719 | 47,659 | → |
| Glenwood | Village | Cook | 8,930 | 8,985 | 8,880 | → |
| Godfrey | Village | Madison | 16,891 | 18,005 | 17,650 | → |
| Godley | Village | Grundy / Will | 595 | 601 | 726 | → |
| Golconda | City | Pope | 757 | 670 | 644 | → |
| Golden | Village | Adams | 623 | 644 | 627 | → |
| Golden Gate | Village | Wayne | 100 | 68 | 67 | → |
| Golf | Village | Cook | 456 | 493 | 498 | → |
| Good Hope | Village | McDonough | 426 | 396 | 372 | → |
| Goodfield | Village | Tazewell / Woodford | 788 | 866 | 981 | → |
| Goreville | Village | Johnson | 969 | 1,050 | 1,061 | → |
| Gorham | Village | Jackson | 256 | 236 | 226 | → |
| Grafton | City | Jersey | 626 | 674 | 641 | → |
| Grand Ridge | Village | LaSalle | 546 | 560 | 529 | → |
| Grand Tower | City | Jackson | 622 | 605 | 574 | → |
| Grandview | Village | Sangamon | 1,534 | 1,441 | 1,405 | → |
| Granite City | City | Madison | 31,891 | 29,849 | 28,746 | → |
| Grant Park | Village | Kankakee | 1,380 | 1,331 | 1,260 | → |
| Grantfork | Village | Madison | 257 | 337 | 332 | → |
| Granville | Village | Putnam | 1,405 | 1,427 | 1,319 | → |
| Grayslake | Village | Lake | 18,563 | 21,039 | 20,957 | → |
| Grayville | City | White / Edwards | 1,837 | 1,668 | 1,596 | → |
| Green Oaks | Village | Lake | 3,573 | 3,865 | 3,862 | → |
| Green Valley | Village | Tazewell | 706 | 711 | 676 | → |
| Greenfield | City | Greene | 1,177 | 1,071 | 1,004 | → |
| Greenup | Village | Cumberland | 1,554 | 1,513 | 1,490 | → |
| Greenview | Village | Menard | 862 | 778 | 731 | → |
| Greenville | City | Bond | 7,030 | 7,035 | 6,761 | → |
| Greenwood | Village | McHenry | 243 | 255 | 248 | → |
| Gridley | Village | McLean | 1,429 | 1,432 | 1,416 | → |
| Griggsville | City | Pike | 1,256 | 1,226 | 1,163 | → |
| Gulf Port | Village | Henderson | 205 | 54 | 50 | → |
| Gurnee | Village | Lake | 28,809 | 31,226 | 30,767 | → |
| Hainesville | Village | Lake | 2,028 | 3,679 | 3,645 | → |
| Hamburg | Village | Calhoun | 125 | 128 | 121 | → |
| Hamel | Village | Madison | 570 | 816 | 814 | → |
| Hamilton | City | Hancock | 3,029 | 2,951 | 2,768 | → |
| Hammond | Village | Piatt | 518 | 509 | 485 | → |
| Hampshire | Village | Kane | 2,871 | 5,568 | 6,347 | → |
| Hampton | Village | Rock Island | 1,660 | 1,863 | 1,814 | → |
| Hanaford | Village | Franklin | 171 | 327 | 324 | → |
| Hanna City | Village | Peoria | 1,025 | 1,237 | 1,218 | → |
| Hanover | Village | Jo Daviess | 857 | 844 | 784 | → |
| Hanover Park | Village | Cook / DuPage | 38,129 | 38,022 | 37,982 | → |
| Hardin | Village | Calhoun | 956 | 967 | 922 | → |
| Harmon | Village | Lee | 145 | 120 | 113 | → |
| Harrisburg | City | Saline | 9,762 | 9,025 | 8,737 | → |
| Harristown | Village | Macon | 1,358 | 1,367 | 1,307 | → |
| Hartford | Village | Madison | 1,532 | 1,429 | 1,367 | → |
| Hartsburg | Village | Logan | 343 | 314 | 301 | → |
| Harvard | City | McHenry | 8,066 | 9,435 | 9,180 | → |
| Harvel | Village | Christian / Montgomery | 239 | 223 | 214 | → |
| Harvey | City | Cook | 30,031 | 25,264 | 24,908 | → |
| Harwood Heights | Village | Cook | 8,307 | 8,608 | 8,505 | → |
| Havana | City | Mason | 3,594 | 3,301 | 3,076 | → |
| Hawthorn Woods | Village | Lake | 6,058 | 7,780 | 8,412 | → |
| Hazel Crest | Village | Cook | 14,805 | 14,009 | 13,837 | → |
| Hebron | Village | McHenry | 1,088 | 1,216 | 1,200 | → |
| Hecker | Village | St. Clair / Monroe | 470 | 486 | 478 | → |
| Henderson | Village | Knox | 317 | 255 | 245 | → |
| Hennepin | Village | Putnam | 700 | 757 | 707 | → |
| Henning | Village | Vermilion | 246 | 251 | 238 | → |
| Henry | City | Marshall | 2,534 | 2,464 | 2,273 | → |
| Herrick | Village | Shelby | 511 | 436 | 431 | → |
| Herrin | City | Williamson | 11,247 | 12,523 | 12,880 | → |
| Herscher | Village | Kankakee | 1,510 | 1,596 | 1,525 | → |
| Hettick | Village | Macoupin | 182 | 181 | 171 | → |
| Heyworth | Village | McLean | 2,514 | 2,844 | 2,885 | → |
| Hickory Hills | City | Cook | 13,935 | 14,049 | 13,950 | → |
| Hidalgo | Village | Jasper | 127 | 106 | 107 | → |
| Highland | City | Madison | 8,462 | 9,918 | 9,830 | → |
| Highland Park | City | Lake | 30,335 | 29,745 | 29,767 | → |
| Highwood | City | Lake | 5,391 | 5,449 | 5,325 | → |
| Hillcrest | Village | Ogle | 1,184 | 1,318 | 1,243 | → |
| Hillsboro | City | Montgomery | 6,389 | 6,207 | 6,037 | → |
| Hillsdale | Village | Rock Island | 596 | 517 | 511 | → |
| Hillside | Village | Cook | 8,163 | 8,162 | 8,043 | → |
| Hillview | Village | Greene | 182 | 193 | 182 | → |
| Hinckley | Village | DeKalb | 1,991 | 2,070 | 2,048 | → |
| Hindsboro | Village | Douglas | 361 | 313 | 303 | → |
| Hinsdale | Village | Cook / DuPage | 17,417 | 16,822 | 17,705 | → |
| Hodgkins | Village | Cook | 2,135 | 1,897 | 1,897 | → |
| Hoffman | Village | Clinton | 463 | 508 | 486 | → |
| Hoffman Estates | Village | Cook / Kane | 49,685 | 51,886 | 51,567 | → |
| Holiday Hills | Village | McHenry | 743 | 601 | 582 | → |
| Hollowayville | Village | Bureau | 82 | 84 | 80 | → |
| Homer | Village | Champaign | 1,204 | 1,193 | 1,171 | → |
| Homer Glen | Village | Will | 22,301 | 24,223 | 24,591 | → |
| Hometown | City | Cook | 4,467 | 4,349 | 4,274 | → |
| Homewood | Village | Cook | 19,578 | 19,307 | 19,089 | → |
| Hoopeston | City | Vermilion | 5,696 | 5,353 | 5,112 | → |
| Hooppole | Village | Henry | 162 | 204 | 197 | → |
| Hopedale | Village | Tazewell | 924 | 865 | 829 | → |
| Hopewell | Village | Marshall | 383 | 410 | 404 | → |
| Hopkins Park | Village | Kankakee | 722 | 603 | 604 | → |
| Hoyleton | Village | Washington | 571 | 531 | 501 | → |
| Hudson | Village | McLean | 1,538 | 1,838 | 1,825 | → |
| Huey | Village | Clinton | 188 | 169 | 162 | → |
| Hull | Village | Pike | 474 | 461 | 437 | → |
| Humboldt | Village | Coles | 471 | 437 | 424 | → |
| Hume | Village | Edgar | 376 | 380 | 351 | → |
| Huntley | Village | Kane / McHenry | 5,800 | 24,316 | 27,207 | → |
| Hurst | City | Williamson | 806 | 795 | 790 | → |
| Hutsonville | Village | Crawford | 619 | 554 | 538 | → |
| Illiopolis | Village | Sangamon | 926 | 891 | 858 | → |
| Ina | Village | Jefferson | 2,520 | 2,338 | 2,347 | → |
| Indian Creek | Village | Lake | ... | 545 | 536 | → |
| Indian Head Park | Village | Cook | 3,874 | 3,816 | 3,787 | → |
| Indianola | Village | Vermilion | 227 | 276 | 265 | → |
| Industry | Village | McDonough | 566 | 478 | 449 | → |
| Inverness | Village | Cook | 6,949 | 7,400 | 7,508 | → |
| Iola | Village | Clay | 171 | 141 | 135 | → |
| Ipava | Village | Fulton | 518 | 470 | 435 | → |
| Iroquois | Village | Iroquois | 205 | 154 | 142 | → |
| Irving | Village | Montgomery | 500 | 495 | 471 | → |
| Irvington | Village | Washington | 791 | 665 | 624 | → |
| Irwin | Village | Kankakee | 90 | 74 | 71 | → |
| Island Lake | Village | Lake / McHenry | 8,173 | 8,079 | 8,116 | → |
| Itasca | Village | DuPage | 8,243 | 8,650 | 9,416 | → |
| Iuka | Village | Marion | 596 | 489 | 471 | → |
| Ivesdale | Village | Piatt / Champaign | 290 | 267 | 259 | → |
| Jacksonville | City | Morgan | 19,070 | 19,446 | 18,454 | → |
| Jeffersonville | Village | Wayne | 371 | 367 | 363 | → |
| Jeisyville | Village | Christian | 128 | 107 | 103 | → |
| Jerome | Village | Sangamon | 1,769 | 1,677 | 1,607 | → |
| Jerseyville | City | Jersey | 8,127 | 8,465 | 8,265 | → |
| Jewett | Village | Cumberland | 238 | 223 | 220 | → |
| Johnsburg | Village | McHenry | 5,413 | 6,337 | 6,317 | → |
| Johnsonville | Village | Wayne | 69 | 77 | 76 | → |
| Johnston City | City | Williamson | 3,599 | 3,557 | 3,454 | → |
| Joliet | City | Kendall / Will | 106,849 | 147,605 | 148,462 | → |
| Jonesboro | City | Union | 1,886 | 1,821 | 1,723 | → |
| Joppa | Village | Massac | 407 | 360 | 331 | → |
| Joy | Village | Mercer | 377 | 417 | 388 | → |
| Junction | Village | Gallatin | 142 | 129 | 117 | → |
| Junction City | Village | Marion | 563 | 482 | 469 | → |
| Justice | Village | Cook | 12,143 | 12,926 | 12,836 | → |
| Kampsville | Village | Calhoun | 319 | 328 | 311 | → |
| Kane | Village | Greene | 468 | 438 | 413 | → |
| Kaneville | Village | Kane | 438 | 482 | 490 | → |
| Kangley | Village | LaSalle | 283 | 251 | 236 | → |
| Kankakee | City | Kankakee | 27,371 | 27,562 | 26,216 | → |
| Kansas | Village | Edgar | 836 | 787 | 728 | → |
| Kappa | Village | Woodford | 181 | 230 | 232 | → |
| Karnak | Village | Pulaski | 641 | 499 | 450 | → |
| Kaskaskia | Village | Randolph | 9 | 14 | 13 | → |
| Keenes | Village | Wayne | 102 | 83 | 82 | → |
| Keensburg | Village | Wabash | 265 | 210 | 203 | → |
| Keithsburg | City | Mercer | 720 | 609 | 579 | → |
| Kell | Village | Marion | 208 | 219 | 211 | → |
| Kempton | Village | Ford | 236 | 231 | 213 | → |
| Kenilworth | Village | Cook | 2,614 | 2,508 | 2,520 | → |
| Kenney | Village | De Witt | 373 | 324 | 315 | → |
| Kewanee | City | Henry | 12,907 | 12,916 | 12,473 | → |
| Keyesport | Village | Bond / Clinton | 491 | 421 | 403 | → |
| Kilbourne | Village | Mason | 378 | 302 | 283 | → |
| Kildeer | Village | Lake | 3,354 | 3,906 | 4,041 | → |
| Kincaid | Village | Christian | 1,439 | 1,505 | 1,410 | → |
| Kinderhook | Village | Pike | 255 | 216 | 209 | → |
| Kingston | Village | DeKalb | 970 | 1,168 | 1,170 | → |
| Kingston Mines | Village | Peoria | 284 | 302 | 289 | → |
| Kinmundy | City | Marion | 899 | 796 | 769 | → |
| Kinsman | Village | Grundy | 109 | 99 | 94 | → |
| Kirkland | Village | DeKalb | 1,166 | 1,744 | 1,723 | → |
| Kirkwood | Village | Warren | 794 | 714 | 685 | → |
| Knoxville | City | Knox | 3,130 | 2,917 | 2,795 | → |
| La Fayette | Village | Stark | 230 | 223 | 203 | → |
| La Grange | Village | Cook | 15,738 | 15,550 | 15,581 | → |
| La Grange Park | Village | Cook | 13,226 | 13,580 | 13,433 | → |
| La Harpe | City | Hancock | 1,389 | 1,235 | 1,170 | → |
| La Moille | Village | Bureau | 761 | 726 | 691 | → |
| La Prairie | Village | Adams | 60 | 47 | 46 | → |
| La Rose | Village | Marshall | 159 | 144 | 134 | → |
| Lacon | City | Marshall | 1,995 | 1,937 | 1,781 | → |
| Ladd | Village | Bureau | 1,315 | 1,295 | 1,218 | → |
| Lake Barrington | Village | Lake | 4,766 | 4,949 | 4,905 | → |
| Lake Bluff | Village | Lake | 6,043 | 5,709 | 5,662 | → |
| Lake Forest | City | Lake | 20,068 | 19,376 | 19,612 | → |
| Lake in the Hills | Village | McHenry | 23,577 | 29,005 | 28,936 | → |
| Lake Ka-ho | Village | Macoupin | 260 | 237 | 225 | → |
| Lake Villa | Village | Lake | 5,916 | 8,634 | 8,716 | → |
| Lake Zurich | Village | Lake | 18,472 | 19,691 | 19,903 | → |
| Lakemoor | Village | Lake / McHenry | 2,853 | 6,057 | 6,048 | → |
| Lakewood | Village | McHenry | 2,321 | 3,814 | 3,928 | → |
| Lanark | City | Carroll | 1,581 | 1,457 | 1,354 | → |
| Lansing | Village | Cook | 28,281 | 28,351 | 27,962 | → |
| LaSalle | City | LaSalle | 9,773 | 9,634 | 9,120 | → |
| Latham | Village | Logan | 366 | 380 | 362 | → |
| Lawrenceville | City | Lawrence | 4,756 | 4,418 | 4,406 | → |
| Le Roy | City | McLean | 3,350 | 3,564 | 3,544 | → |
| Leaf River | Village | Ogle | 555 | 443 | 413 | → |
| Lebanon | City | St. Clair | 3,558 | 4,457 | 4,417 | → |
| Lee | Village | DeKalb / Lee | 313 | 345 | 334 | → |
| Leland | Village | LaSalle | 967 | 977 | 928 | → |
| Leland Grove | City | Sangamon | 1,570 | 1,489 | 1,488 | → |
| Lemont | Village | Cook / DuPage / Will | 13,216 | 16,044 | 17,075 | → |
| Lena | Village | Stephenson | 2,890 | 2,912 | 2,750 | → |
| Lenzburg | Village | St. Clair | 578 | 518 | 492 | → |
| Leonore | Village | LaSalle | 114 | 130 | 124 | → |
| Lerna | Village | Coles | 342 | 286 | 277 | → |
| Lewistown | City | Fulton | 2,521 | 2,384 | 2,207 | → |
| Lexington | City | McLean | 1,975 | 2,064 | 2,047 | → |
| Liberty | Village | Adams | 522 | 516 | 503 | → |
| Libertyville | Village | Lake | 20,753 | 20,413 | 20,490 | → |
| Lily Lake | Village | Kane | 843 | 993 | 1,041 | → |
| Lima | Village | Adams | 216 | 161 | 157 | → |
| Limestone | Village | Kankakee | 1,618 | 1,603 | 1,541 | → |
| Lincoln | City | Logan | 15,270 | 14,506 | 13,816 | → |
| Lincolnshire | Village | Lake | 6,126 | 7,280 | 7,336 | → |
| Lincolnwood | Village | Cook | 12,362 | 12,590 | 12,483 | → |
| Lindenhurst | Village | Lake | 12,563 | 14,567 | 14,467 | → |
| Lisbon | Village | Kendall | 278 | 297 | 317 | → |
| Lisle | Village | DuPage | 22,160 | 22,512 | 22,912 | → |
| Litchfield | City | Montgomery | 7,061 | 7,128 | 6,793 | → |
| Little York | Village | Warren | 290 | 331 | 318 | → |
| Littleton | Village | Schuyler | 196 | 181 | 168 | → |
| Liverpool | Village | Fulton | 123 | 129 | 126 | → |
| Livingston | Village | Madison | 823 | 858 | 820 | → |
| Loami | Village | Sangamon | 812 | 745 | 752 | → |
| Lockport | City | Will | 15,004 | 24,860 | 25,434 | → |
| Loda | Village | Iroquois | 418 | 407 | 403 | → |
| Lomax | Village | Henderson | 549 | 454 | 414 | → |
| Lombard | Village | DuPage | 42,341 | 43,347 | 43,745 | → |
| London Mills | Village | Fulton / Knox | 445 | 392 | 379 | → |
| Long Creek | Village | Macon | 1,424 | 1,324 | 1,288 | → |
| Long Grove | Village | Lake | 6,728 | 7,921 | 8,026 | → |
| Long Point | Village | Livingston | 247 | 226 | 215 | → |
| Longview | Village | Champaign | 154 | 153 | 151 | → |
| Loraine | Village | Adams | 363 | 313 | 303 | → |
| Lostant | Village | LaSalle | 483 | 506 | 486 | → |
| Louisville | Village | Clay | 1,302 | 1,148 | 1,102 | → |
| Loves Park | City | Boone / Winnebago | 20,255 | 23,999 | 23,387 | → |
| Lovington | Village | Moultrie | 1,219 | 1,130 | 1,069 | → |
| Ludlow | Village | Champaign | 367 | 371 | 363 | → |
| Lyndon | Village | Whiteside | 566 | 648 | 620 | → |
| Lynnville | Village | Morgan | 137 | 117 | 114 | → |
| Lynwood | Village | Cook | 7,979 | 9,026 | 9,279 | → |
| Lyons | Village | Cook | 10,264 | 10,733 | 10,585 | → |
| Macedonia | Village | Franklin / Hamilton | 59 | 63 | 61 | → |
| Machesney Park | Village | Winnebago | 20,817 | 23,495 | 22,733 | → |
| Mackinaw | Village | Tazewell | 1,582 | 1,950 | 1,920 | → |
| Macomb | City | McDonough | 18,554 | 19,294 | 18,267 | → |
| Macon | City | Macon | 1,278 | 1,138 | 1,116 | → |
| Madison | City | St. Clair / Madison | 4,539 | 3,891 | 3,823 | → |
| Maeystown | Village | Monroe | 138 | 159 | 160 | → |
| Magnolia | Village | Putnam | 279 | 260 | 249 | → |
| Mahomet | Village | Champaign | 5,257 | 7,385 | 8,505 | → |
| Makanda | Village | Jackson | 436 | 561 | 540 | → |
| Malden | Village | Bureau | 343 | 362 | 347 | → |
| Malta | Village | DeKalb | 956 | 1,169 | 1,160 | → |
| Manchester | Village | Scott | 354 | 292 | 273 | → |
| Manhattan | Village | Will | 3,341 | 7,051 | 7,776 | → |
| Manito | Village | Mason | 1,711 | 1,642 | 1,525 | → |
| Manlius | Village | Bureau | 357 | 359 | 340 | → |
| Mansfield | Village | Piatt | 948 | 906 | 865 | → |
| Manteno | Village | Kankakee | 6,494 | 9,204 | 9,021 | → |
| Maple Park | Village | DeKalb / Kane | 778 | 1,310 | 1,325 | → |
| Mapleton | Village | Peoria | 250 | 270 | 273 | → |
| Maquon | Village | Knox | 316 | 289 | 274 | → |
| Marengo | City | McHenry | 6,372 | 7,675 | 7,496 | → |
| Marietta | Village | Fulton | 149 | 112 | 109 | → |
| Marine | Village | Madison | 909 | 960 | 925 | → |
| Marion | City | Williamson / Johnson | 15,960 | 17,216 | 17,762 | → |
| Marissa | Village | St. Clair | 2,165 | 1,978 | 1,839 | → |
| Mark | Village | Putnam | 551 | 555 | 537 | → |
| Markham | City | Cook | 12,669 | 12,533 | 12,538 | → |
| Maroa | City | Macon | 1,698 | 1,801 | 1,730 | → |
| Marquette Heights | City | Tazewell | 2,801 | 2,824 | 2,688 | → |
| Marseilles | City | LaSalle | 4,645 | 5,117 | 4,899 | → |
| Marshall | City | Clark | 3,979 | 3,933 | 3,860 | → |
| Martinsville | City | Clark | 1,218 | 1,167 | 1,119 | → |
| Martinton | Village | Iroquois | 370 | 381 | 356 | → |
| Maryville | Village | Madison | 4,887 | 7,487 | 7,900 | → |
| Mascoutah | City | St. Clair | 5,679 | 7,509 | 8,010 | → |
| Mason | Town | Effingham | 410 | 345 | 337 | → |
| Mason City | City | Mason | 2,528 | 2,343 | 2,181 | → |
| Matherville | Village | Mercer | 772 | 721 | 672 | → |
| Matteson | Village | Cook / Will | 12,964 | 19,026 | 19,418 | → |
| Mattoon | City | Coles | 18,437 | 18,555 | 17,886 | → |
| Maunie | Village | White | 177 | 139 | 133 | → |
| Maywood | Village | Cook | 26,924 | 24,100 | 23,640 | → |
| Mazon | Village | Grundy | 902 | 1,015 | 971 | → |
| McClure | Village | Alexander | 481 | 402 | 325 | → |
| McCook | Village | Cook | 255 | 228 | 224 | → |
| McCullom Lake | Village | McHenry | 1,012 | 1,049 | 1,014 | → |
| McHenry | City | McHenry | 21,497 | 27,016 | 26,911 | → |
| McLean | Village | McLean | 809 | 830 | 803 | → |
| McLeansboro | City | Hamilton | 2,960 | 2,887 | 2,786 | → |
| McNabb | Village | Putnam | 310 | 285 | 264 | → |
| Mechanicsburg | Village | Sangamon | 464 | 590 | 660 | → |
| Media | Village | Henderson | 134 | 107 | 96 | → |
| Medora | Village | Macoupin / Jersey | 521 | 419 | 398 | → |
| Melrose Park | Village | Cook | 23,144 | 25,414 | 25,197 | → |
| Melvin | Village | Ford | 487 | 452 | 421 | → |
| Mendon | Village | Adams | 1,079 | 953 | 942 | → |
| Mendota | City | LaSalle | 7,279 | 7,373 | 7,099 | → |
| Menominee | Village | Jo Daviess | 226 | 255 | 246 | → |
| Meredosia | Village | Morgan | 1,046 | 1,044 | 987 | → |
| Merrionette Park | Village | Cook | 1,999 | 1,900 | 1,882 | → |
| Metamora | Village | Woodford | 2,782 | 3,674 | 3,732 | → |
| Metcalf | Village | Edgar | 220 | 189 | 176 | → |
| Metropolis | City | Massac | 6,624 | 6,570 | 6,133 | → |
| Mettawa | Village | Lake | 385 | 541 | 551 | → |
| Middletown | Village | Logan | 453 | 320 | 308 | → |
| Midlothian | Village | Cook | 14,428 | 14,815 | 14,634 | → |
| Milan | Village | Rock Island | 5,507 | 5,160 | 5,061 | → |
| Milford | Village | Iroquois | 1,396 | 1,310 | 1,208 | → |
| Mill Creek | Village | Union | 78 | 65 | 64 | → |
| Mill Shoals | Village | White / Wayne | 238 | 215 | 204 | → |
| Millbrook | Village | Kendall | 323 | 325 | 344 | → |
| Milledgeville | Village | Carroll | 1,040 | 1,032 | 966 | → |
| Millington | Village | Kendall / LaSalle | 502 | 665 | 663 | → |
| Millstadt | Village | St. Clair | 2,921 | 3,986 | 3,873 | → |
| Milton | Village | Pike | 287 | 271 | 264 | → |
| Mineral | Village | Bureau | 273 | 237 | 226 | → |
| Minier | Village | Tazewell | 1,247 | 1,252 | 1,203 | → |
| Minonk | City | Woodford | 2,190 | 2,078 | 2,006 | → |
| Minooka | Village | Grundy / Kendall / Will | 4,056 | 10,919 | 11,307 | → |
| Modesto | Village | Macoupin | 247 | 189 | 178 | → |
| Mokena | Village | Will | 14,286 | 18,812 | 20,293 | → |
| Moline | City | Rock Island | 43,561 | 43,484 | 42,231 | → |
| Momence | City | Kankakee | 3,182 | 3,310 | 3,149 | → |
| Monee | Village | Will | 2,951 | 5,146 | 5,119 | → |
| Monmouth | City | Warren | 9,793 | 9,444 | 9,091 | → |
| Monroe Center | Village | Ogle | 494 | 471 | 440 | → |
| Montgomery | Village | Kendall / Kane | 5,686 | 18,303 | 19,701 | → |
| Monticello | City | Piatt | 5,123 | 5,548 | 5,555 | → |
| Montrose | Village | Effingham / Cumberland | 264 | 201 | 197 | → |
| Morris | City | Grundy | 11,941 | 13,638 | 14,651 | → |
| Morrison | City | Whiteside | 4,440 | 4,190 | 4,071 | → |
| Morrisonville | Village | Christian | 1,047 | 1,056 | 1,016 | → |
| Morton | Village | Tazewell | 15,251 | 16,278 | 16,301 | → |
| Morton Grove | Village | Cook | 22,415 | 23,245 | 23,142 | → |
| Mound City | City | Pulaski | 694 | 595 | 524 | → |
| Mound Station | Village | Brown | 124 | 122 | 115 | → |
| Mounds | City | Pulaski | 1,115 | 810 | 713 | → |
| Mount Auburn | Village | Christian | 519 | 480 | 460 | → |
| Mount Carmel | City | Wabash | 8,086 | 7,285 | 6,972 | → |
| Mount Carroll | City | Carroll | 1,862 | 1,717 | 1,604 | → |
| Mount Clare | Village | Macoupin | 413 | 278 | 264 | → |
| Mount Erie | Village | Wayne | 104 | 88 | 87 | → |
| Mount Morris | Village | Ogle | 3,043 | 2,998 | 2,826 | → |
| Mount Olive | City | Macoupin | 2,167 | 2,106 | 1,974 | → |
| Mount Prospect | Village | Cook | 55,712 | 54,177 | 53,930 | → |
| Mount Pulaski | City | Logan | 1,700 | 1,566 | 1,494 | → |
| Mount Sterling | City | Brown | 2,085 | 2,025 | 1,922 | → |
| Mount Vernon | City | Jefferson | 16,331 | 15,286 | 14,956 | → |
| Mount Zion | Village | Macon | 4,880 | 5,833 | 5,820 | → |
| Moweaqua | Village | Shelby / Christian | 1,952 | 1,831 | 1,726 | → |
| Muddy | Village | Saline | 90 | 69 | 65 | → |
| Mulberry Grove | Village | Bond | 676 | 634 | 588 | → |
| Muncie | Village | Vermilion | 157 | 146 | 138 | → |
| Mundelein | Village | Lake | 30,834 | 30,977 | 31,385 | → |
| Murphysboro | City | Jackson | 8,851 | 7,967 | 7,568 | → |
| Murrayville | Village | Morgan | 644 | 587 | 560 | → |
| Naperville | City | DuPage / Will | 128,396 | 142,126 | 147,682 | → |
| Naplate | Village | LaSalle | 510 | 496 | 476 | → |
| Naples | Town | Scott | 137 | 130 | 121 | → |
| Nashville | City | Washington | 3,308 | 3,258 | 3,057 | → |
| Nason | City | Jefferson | 235 | 236 | 232 | → |
| Nauvoo | City | Hancock | 1,045 | 1,149 | 1,077 | → |
| Nebo | Village | Pike | 403 | 340 | 327 | → |
| Nelson | Village | Lee | 165 | 170 | 161 | → |
| Neoga | City | Cumberland | 1,913 | 1,636 | 1,625 | → |
| Neponset | Village | Bureau | 522 | 473 | 444 | → |
| New Athens | Village | St. Clair | 1,985 | 2,058 | 1,922 | → |
| New Baden | Village | St. Clair / Clinton | 2,960 | 3,350 | 3,280 | → |
| New Bedford | Village | Bureau | 100 | 75 | 71 | → |
| New Berlin | Village | Sangamon | 1,052 | 1,346 | 1,332 | → |
| New Boston | City | Mercer | 625 | 683 | 651 | → |
| New Burnside | Village | Johnson | 228 | 211 | 209 | → |
| New Canton | Town | Pike | 420 | 359 | 347 | → |
| New Douglas | Village | Madison | 343 | 319 | 310 | → |
| New Grand Chain | Village | Pulaski | 236 | 210 | 189 | → |
| New Haven | Village | Gallatin / White | 487 | 433 | 395 | → |
| New Holland | Village | Logan | 309 | 269 | 259 | → |
| New Lenox | Village | Will | 17,716 | 24,325 | 26,575 | → |
| New Milford | Village | Winnebago | 539 | 697 | 689 | → |
| New Minden | Village | Washington | 205 | 215 | 207 | → |
| New Salem | Village | Pike | 138 | 137 | 131 | → |
| Newark | Village | Kendall | 890 | 981 | 1,030 | → |
| Newman | City | Douglas | 970 | 865 | 849 | → |
| Newton | City | Jasper | 3,085 | 2,894 | 2,854 | → |
| Niantic | Village | Macon | 736 | 707 | 666 | → |
| Niles | Village | Cook | 29,912 | 29,806 | 29,482 | → |
| Nilwood | Town | Macoupin | 286 | 239 | 230 | → |
| Noble | Village | Richland | 746 | 674 | 660 | → |
| Nokomis | City | Montgomery | 2,375 | 2,256 | 2,140 | → |
| Nora | Village | Jo Daviess | 119 | 117 | 114 | → |
| Normal | Town | McLean | 45,505 | 52,544 | 54,284 | → |
| Norridge | Village | Cook | 14,664 | 14,572 | 14,437 | → |
| Norris | Village | Fulton | 193 | 213 | 205 | → |
| Norris City | Village | White | 1,069 | 1,275 | 1,211 | → |
| North Aurora | Village | Kane | 10,691 | 16,723 | 18,245 | → |
| North Barrington | Village | Lake | 2,871 | 3,017 | 2,997 | → |
| North Chicago | City | Lake | 36,004 | 32,577 | 29,842 | → |
| North City | Village | Franklin | 643 | 608 | 594 | → |
| North Henderson | Village | Mercer | 193 | 187 | 176 | → |
| North Pekin | Village | Tazewell | 1,467 | 1,576 | 1,547 | → |
| North Riverside | Village | Cook | 6,348 | 6,672 | 6,564 | → |
| North Utica | Village | LaSalle | 1,159 | 1,350 | 1,344 | → |
| Northbrook | Village | Cook | 33,478 | 33,197 | 33,400 | → |
| Northfield | Village | Cook | 5,589 | 5,448 | 5,470 | → |
| Northlake | City | Cook | 12,133 | 12,325 | 12,364 | → |
| Norwood | Village | Peoria | 478 | 481 | 473 | → |
| O'Fallon | City | St. Clair | 21,946 | 28,674 | 29,272 | → |
| Oak Brook | Village | Cook / DuPage | 8,436 | 7,883 | 8,077 | → |
| Oak Forest | City | Cook | 28,111 | 27,954 | 27,685 | → |
| Oak Grove | Village | Rock Island | ... | 595 | 593 | → |
| Oak Lawn | Village | Cook | 55,272 | 56,690 | 56,087 | → |
| Oak Park | Village | Cook | 52,518 | 51,878 | 52,261 | → |
| Oakbrook Terrace | City | DuPage | 2,277 | 2,134 | 2,161 | → |
| Oakdale | Village | Washington | 221 | 221 | 214 | → |
| Oakford | Village | Menard | 307 | 286 | 276 | → |
| Oakland | City | Coles | 1,008 | 880 | 868 | → |
| Oakwood | Village | Vermilion | 1,511 | 1,595 | 1,532 | → |
| Oakwood Hills | Village | McHenry | 2,124 | 2,083 | 2,058 | → |
| Oblong | Village | Crawford | 1,565 | 1,466 | 1,391 | → |
| Oconee | Village | Shelby | 202 | 180 | 171 | → |
| Odell | Village | Livingston | 1,017 | 1,046 | 987 | → |
| Odin | Village | Marion | 1,105 | 1,076 | 1,032 | → |
| Ogden | Village | Champaign | 772 | 822 | 810 | → |
| Oglesby | City | LaSalle | 3,605 | 3,791 | 3,598 | → |
| Ohio | Village | Bureau | 542 | 513 | 488 | → |
| Ohlman | Village | Montgomery | 49 | 135 | 128 | → |
| Okawville | Village | Washington | 1,349 | 1,434 | 1,376 | → |
| Old Mill Creek | Village | Lake | 198 | 182 | 181 | → |
| Old Ripley | Village | Bond | 129 | 108 | 101 | → |
| Old Shawneetown | Village | Gallatin | 287 | 193 | 177 | → |
| Olmsted | Village | Pulaski | 353 | 333 | 298 | → |
| Olney | City | Richland | 8,765 | 9,128 | 8,942 | → |
| Olympia Fields | Village | Cook | 4,708 | 4,921 | 4,884 | → |
| Omaha | Village | Gallatin | 263 | 266 | 241 | → |
| Onarga | Village | Iroquois | 1,429 | 1,365 | 1,287 | → |
| Oneida | City | Knox | 764 | 702 | 674 | → |
| Oquawka | Village | Henderson | 1,530 | 1,371 | 1,277 | → |
| Orangeville | Village | Stephenson | 718 | 793 | 744 | → |
| Oreana | Village | Macon | 890 | 875 | 824 | → |
| Oregon | City | Ogle | 3,998 | 3,721 | 3,518 | → |
| Orient | City | Franklin | 307 | 358 | 347 | → |
| Orion | Village | Henry | 1,718 | 1,861 | 1,816 | → |
| Orland Hills | Village | Cook | 6,786 | 7,210 | 7,152 | → |
| Orland Park | Village | Cook / Will | 51,078 | 56,664 | 58,765 | → |
| Oswego | Village | Kendall | 13,330 | 30,431 | 34,833 | → |
| Ottawa | City | LaSalle | 18,586 | 18,795 | 18,180 | → |
| Otterville | Town | Jersey | 120 | 126 | 117 | → |
| Owaneco | Village | Christian | 247 | 239 | 228 | → |
| Palatine | Village | Cook | 66,298 | 68,551 | 68,644 | → |
| Palestine | Village | Crawford | 1,385 | 1,369 | 1,295 | → |
| Palmer | Village | Christian | 251 | 229 | 214 | → |
| Palmyra | Village | Macoupin | 733 | 698 | 667 | → |
| Palos Heights | City | Cook | 11,295 | 12,517 | 12,403 | → |
| Palos Hills | City | Cook | 17,707 | 17,480 | 17,358 | → |
| Palos Park | Village | Cook | 4,721 | 4,849 | 4,826 | → |
| Pana | City | Christian / Shelby | 6,015 | 5,861 | 5,522 | → |
| Panama | Village | Bond / Montgomery | 318 | 343 | 325 | → |
| Panola | Village | Woodford | ... | 51 | 50 | → |
| Papineau | Village | Iroquois | 218 | 171 | 157 | → |
| Paris | City | Edgar | 9,244 | 8,857 | 8,322 | → |
| Park City | City | Lake | 6,650 | 7,569 | 7,513 | → |
| Park Forest | Village | Cook / Will | 23,459 | 21,993 | 21,682 | → |
| Park Ridge | City | Cook | 37,827 | 37,479 | 37,494 | → |
| Parkersburg | Village | Richland | 237 | 204 | 202 | → |
| Patoka | Village | Marion | 634 | 584 | 563 | → |
| Paw Paw | Village | Lee | 862 | 870 | 811 | → |
| Pawnee | Village | Sangamon | 2,635 | 2,739 | 2,676 | → |
| Paxton | City | Ford | 4,621 | 4,493 | 4,218 | → |
| Payson | Village | Adams | 1,068 | 1,026 | 1,003 | → |
| Pearl | Village | Pike | 184 | 138 | 132 | → |
| Pearl City | Village | Stephenson | 794 | 838 | 793 | → |
| Pecatonica | Village | Winnebago | 2,004 | 2,203 | 2,102 | → |
| Pekin | City | Tazewell / Peoria | 33,980 | 34,097 | 32,731 | → |
| Peoria | City | Peoria | 112,964 | 115,105 | 112,883 | → |
| Peoria Heights | Village | Tazewell / Woodford / Peoria | 6,732 | 6,087 | 5,858 | → |
| Peotone | Village | Will | 3,409 | 4,142 | 4,152 | → |
| Percy | Village | Randolph | 927 | 976 | 930 | → |
| Perry | Village | Pike | 438 | 397 | 387 | → |
| Peru | City | LaSalle | 9,854 | 10,302 | 9,834 | → |
| Pesotum | Village | Champaign | 549 | 551 | 534 | → |
| Petersburg | City | Menard | 2,313 | 2,331 | 2,218 | → |
| Phillipstown | Village | White | 36 | 44 | 42 | → |
| Philo | Village | Champaign | 1,302 | 1,468 | 1,434 | → |
| Phoenix | Village | Cook | 2,205 | 1,974 | 1,948 | → |
| Pierron | Village | Madison / Bond | 634 | 600 | 567 | → |
| Pinckneyville | City | Perry | 5,495 | 5,648 | 5,392 | → |
| Pingree Grove | Village | Kane | 162 | 4,532 | 8,165 | → |
| Piper City | Village | Ford | 812 | 826 | 763 | → |
| Pittsburg | Village | Williamson | 580 | 572 | 561 | → |
| Pittsfield | City | Pike | 4,755 | 4,583 | 4,419 | → |
| Plainfield | Village | Will / Kendall | 13,183 | 39,854 | 43,926 | → |
| Plainville | Village | Adams | 267 | 264 | 255 | → |
| Plano | City | Kendall | 5,674 | 10,846 | 11,588 | → |
| Plattville | Village | Kendall | 225 | 245 | 259 | → |
| Pleasant Hill | Village | Pike | 1,073 | 966 | 932 | → |
| Pleasant Plains | Village | Sangamon | 772 | 802 | 800 | → |
| Plymouth | Village | Hancock / McDonough | 549 | 505 | 476 | → |
| Pocahontas | Village | Bond | 731 | 782 | 739 | → |
| Polo | City | Ogle | 2,470 | 2,355 | 2,213 | → |
| Pontiac | City | Livingston | 11,978 | 11,934 | 11,809 | → |
| Pontoon Beach | Village | Madison | 5,886 | 5,836 | 5,664 | → |
| Pontoosuc | Village | Hancock | 168 | 146 | 138 | → |
| Poplar Grove | Village | Boone | 1,876 | 4,926 | 5,093 | → |
| Port Barrington | Village | Lake / McHenry | 786 | 1,515 | 1,498 | → |
| Port Byron | Village | Rock Island | 1,537 | 1,647 | 1,639 | → |
| Posen | Village | Cook | 4,730 | 5,982 | 5,914 | → |
| Potomac | Village | Vermilion | 698 | 749 | 716 | → |
| Prairie City | Village | McDonough | 450 | 379 | 357 | → |
| Prairie du Rocher | Village | Randolph | 613 | 604 | 564 | → |
| Prairie Grove | Village | McHenry | 986 | 1,907 | 1,870 | → |
| Princeton | City | Bureau | ... | 7,907 | 7,583 | → |
| Princeville | Village | Peoria | 1,661 | 1,743 | 1,696 | → |
| Prophetstown | City | Whiteside | 2,014 | 2,080 | 1,974 | → |
| Prospect Heights | City | Cook | 17,048 | 16,260 | 16,180 | → |
| Pulaski | Village | Pulaski | 273 | 206 | 184 | → |
| Quincy | City | Adams | 40,783 | 40,636 | 40,303 | → |
| Radom | Village | Washington | 222 | 220 | 212 | → |
| Raleigh | Village | Saline | 324 | 350 | 338 | → |
| Ramsey | Village | Fayette | 1,064 | 1,037 | 1,015 | → |
| Rankin | Village | Vermilion | 620 | 561 | 532 | → |
| Ransom | Village | LaSalle | 409 | 384 | 363 | → |
| Rantoul | Village | Champaign | 12,923 | 12,954 | 12,769 | → |
| Rapids City | Village | Rock Island | 942 | 959 | 966 | → |
| Raritan | Village | Henderson | 140 | 138 | 124 | → |
| Raymond | Village | Montgomery | 923 | 1,006 | 954 | → |
| Red Bud | City | Randolph | 3,504 | 3,698 | 3,529 | → |
| Reddick | Village | Livingston / Kankakee | 209 | 163 | 156 | → |
| Redmon | Village | Edgar | 200 | 173 | 159 | → |
| Reynolds | Village | Rock Island / Mercer | 516 | 539 | 517 | → |
| Richmond | Village | McHenry | 1,189 | 1,876 | 1,920 | → |
| Richton Park | Village | Cook | 12,667 | 13,633 | 13,505 | → |
| Richview | Village | Washington | 314 | 253 | 239 | → |
| Ridge Farm | Village | Vermilion | 916 | 882 | 835 | → |
| Ridgway | Village | Gallatin | 988 | 869 | 790 | → |
| Ridott | Village | Stephenson | 161 | 164 | 156 | → |
| Ringwood | Village | McHenry | 512 | 836 | 820 | → |
| Rio | Village | Knox | 230 | 220 | 211 | → |
| Ripley | Village | Brown | 105 | 86 | 83 | → |
| River Forest | Village | Cook | 11,640 | 11,172 | 11,132 | → |
| River Grove | Village | Cook | 10,715 | 10,246 | 10,093 | → |
| Riverdale | Village | Cook | 15,046 | 13,549 | 13,352 | → |
| Riverside | Village | Cook | 8,843 | 8,875 | 8,742 | → |
| Riverton | Village | Sangamon | 3,114 | 3,455 | 3,431 | → |
| Riverwoods | Village | Lake | 3,867 | 3,671 | 3,626 | → |
| Roanoke | Village | Woodford | 2,037 | 2,078 | 2,019 | → |
| Robbins | Village | Cook | 6,559 | 5,337 | 5,486 | → |
| Roberts | Village | Ford | 387 | 362 | 338 | → |
| Robinson | City | Crawford | 8,001 | 7,713 | 7,453 | → |
| Rochelle | City | Ogle | 9,670 | 9,574 | 9,159 | → |
| Rochester | Village | Sangamon | 2,875 | 3,689 | 3,729 | → |
| Rock City | Village | Stephenson | 328 | 315 | 299 | → |
| Rock Falls | City | Whiteside | 9,579 | 9,403 | 8,911 | → |
| Rock Island | City | Rock Island | 39,616 | 39,005 | 38,110 | → |
| Rockbridge | Village | Greene | 192 | 169 | 159 | → |
| Rockdale | Village | Will | 1,878 | 1,987 | 1,945 | → |
| Rockford | City | Winnebago | 151,365 | 153,301 | 147,051 | → |
| Rockton | Village | Winnebago | 5,405 | 7,685 | 7,473 | → |
| Rockwood | Village | Randolph | 53 | 42 | 39 | → |
| Rolling Meadows | City | Cook | 24,565 | 24,095 | 23,988 | → |
| Romeoville | Village | Will | 20,905 | 39,621 | 39,632 | → |
| Roodhouse | City | Greene | 2,228 | 1,814 | 1,706 | → |
| Roscoe | Village | Winnebago | 6,123 | 10,782 | 10,505 | → |
| Rose Hill | Village | Jasper | 73 | 80 | 79 | → |
| Roselle | Village | Cook / DuPage | 23,198 | 22,724 | 22,794 | → |
| Rosemont | Village | Cook | 4,284 | 4,206 | 4,151 | → |
| Roseville | Village | Warren | 1,072 | 989 | 952 | → |
| Rosiclare | City | Hardin | 1,230 | 1,160 | 1,054 | → |
| Rossville | Village | Vermilion | 1,217 | 1,331 | 1,257 | → |
| Round Lake | Village | Lake | 5,819 | 18,335 | 18,444 | → |
| Round Lake Beach | Village | Lake | 26,070 | 28,101 | 27,607 | → |
| Round Lake Heights | Village | Lake | 1,325 | 2,741 | 2,696 | → |
| Round Lake Park | Village | Lake | 6,046 | 7,449 | 7,704 | → |
| Roxana | Village | Madison | 1,564 | 1,542 | 1,465 | → |
| Royal | Village | Champaign | 278 | 293 | 291 | → |
| Royal Lakes | Village | Macoupin | 194 | 197 | 186 | → |
| Royalton | Village | Franklin | 1,129 | 1,151 | 1,126 | → |
| Ruma | Village | Randolph | 283 | 316 | 309 | → |
| Rushville | City | Schuyler | 3,219 | 3,209 | 2,968 | → |
| Russellville | Village | Lawrence | 121 | 94 | 87 | → |
| Rutland | Village | LaSalle | 340 | 318 | 308 | → |
| Sadorus | Village | Champaign | 431 | 416 | 403 | → |
| Sailor Springs | Village | Clay | 128 | 95 | 93 | → |
| Salem | City | Marion | 7,987 | 7,480 | 7,173 | → |
| Sammons Point | Village | Kankakee | 285 | 279 | 267 | → |
| San Jose | Village | Mason / Logan | 711 | 642 | 611 | → |
| Sandoval | Village | Marion | 1,433 | 1,274 | 1,221 | → |
| Sandwich | City | Kendall / DeKalb | 6,526 | 7,424 | 7,387 | → |
| Sauget | Village | St. Clair | 198 | 159 | 149 | → |
| Sauk Village | Village | Cook / Will | 10,335 | 10,553 | 10,452 | → |
| Saunemin | Village | Livingston | 438 | 420 | 402 | → |
| Savanna | City | Carroll | 3,529 | 3,063 | 2,847 | → |
| Savoy | Village | Champaign | 4,554 | 7,272 | 8,272 | → |
| Sawyerville | Village | Macoupin | 281 | 279 | 265 | → |
| Saybrook | Village | McLean | 760 | 693 | 677 | → |
| Scales Mound | Village | Jo Daviess | 391 | 386 | 360 | → |
| Schaumburg | Village | Cook / DuPage | 75,390 | 74,229 | 74,184 | → |
| Schiller Park | Village | Cook | 11,791 | 11,793 | 11,640 | → |
| Schram City | Village | Montgomery | 647 | 586 | 557 | → |
| Sciota | Village | McDonough | 57 | 61 | 58 | → |
| Scottville | Village | Macoupin | 143 | 116 | 111 | → |
| Seaton | Village | Mercer | 245 | 222 | 204 | → |
| Seatonville | Village | Bureau | 303 | 314 | 301 | → |
| Secor | Village | Woodford | 382 | 376 | 361 | → |
| Seneca | Village | Grundy / LaSalle | 2,164 | 2,365 | 2,268 | → |
| Sesser | City | Franklin | 2,105 | 1,931 | 1,890 | → |
| Shabbona | Village | DeKalb | 970 | 927 | 920 | → |
| Shannon | Village | Carroll | 848 | 757 | 704 | → |
| Shawneetown | City | Gallatin | 1,410 | 1,239 | 1,128 | → |
| Sheffield | Village | Bureau | 950 | 926 | 882 | → |
| Shelbyville | City | Shelby | 5,024 | 4,703 | 4,557 | → |
| Sheldon | Village | Iroquois | 1,240 | 1,070 | 988 | → |
| Sheridan | Village | LaSalle | 2,429 | 2,137 | 2,712 | → |
| Sherman | Village | Sangamon | 2,885 | 4,148 | 4,701 | → |
| Sherrard | Village | Mercer | 712 | 640 | 598 | → |
| Shiloh | Village | St. Clair | 8,625 | 12,524 | 13,090 | → |
| Shipman | Town | Macoupin | 660 | 624 | 599 | → |
| Shorewood | Village | Will | 7,958 | 15,623 | 17,249 | → |
| Shumway | Village | Effingham | 225 | 202 | 198 | → |
| Sibley | Village | Ford | 335 | 272 | 254 | → |
| Sidell | Village | Vermilion | 623 | 617 | 584 | → |
| Sidney | Village | Champaign | 1,117 | 1,235 | 1,210 | → |
| Sigel | Town | Shelby | 384 | 373 | 355 | → |
| Silvis | City | Rock Island | 7,385 | 7,520 | 7,571 | → |
| Simpson | Village | Johnson | 58 | 60 | 60 | → |
| Sims | Village | Wayne | 280 | 252 | 248 | → |
| Skokie | Village | Cook | 63,274 | 64,845 | 63,978 | → |
| Sleepy Hollow | Village | Kane | 3,567 | 3,304 | 3,313 | → |
| Smithboro | Village | Bond | 203 | 177 | 163 | → |
| Smithfield | Village | Fulton | 234 | 230 | 223 | → |
| Smithton | Village | St. Clair | 2,374 | 3,741 | 3,813 | → |
| Somonauk | Village | DeKalb / LaSalle | 1,465 | 1,904 | 1,881 | → |
| Sorento | Village | Bond | 591 | 498 | 463 | → |
| South Barrington | Village | Cook | 3,770 | 4,575 | 4,981 | → |
| South Beloit | City | Winnebago | 5,409 | 7,896 | 7,673 | → |
| South Chicago Heights | Village | Cook | 3,974 | 4,143 | 4,085 | → |
| South Elgin | Village | Kane | 16,049 | 21,985 | 22,549 | → |
| South Holland | Village | Cook | 22,420 | 22,014 | 21,732 | → |
| South Jacksonville | Village | Morgan | 3,454 | 3,331 | 3,165 | → |
| South Pekin | Village | Tazewell | 1,154 | 1,146 | 1,104 | → |
| South Roxana | Village | Madison | 1,881 | 2,053 | 1,978 | → |
| South Wilmington | Village | Grundy | 654 | 681 | 652 | → |
| Southern View | Village | Sangamon | 1,745 | 1,661 | 1,599 | → |
| Sparland | Village | Marshall | 510 | 406 | 379 | → |
| Sparta | City | Randolph | 4,602 | 4,302 | 4,341 | → |
| Spaulding | Village | Sangamon | 647 | 873 | 863 | → |
| Spillertown | Village | Williamson | 212 | 203 | 199 | → |
| Spring Bay | Village | Woodford | 435 | 472 | 461 | → |
| Spring Grove | Village | McHenry | 3,858 | 5,772 | 5,725 | → |
| Spring Valley | City | Bureau | 5,468 | 5,558 | 5,239 | → |
| Springerton | Village | White | 134 | 110 | 104 | → |
| Springfield | City | Sangamon | 112,514 | 116,463 | 114,868 | → |
| St. Anne | Village | Kankakee | 1,226 | 1,259 | 1,193 | → |
| St. Augustine | Village | Knox | 148 | 122 | 115 | → |
| St. Charles | City | DuPage / Kane | 27,943 | 32,329 | 32,714 | → |
| St. David | Village | Fulton | 598 | 589 | 542 | → |
| St. Elmo | City | Fayette | 1,459 | 1,426 | 1,384 | → |
| St. Francisville | City | Lawrence | 764 | 697 | 643 | → |
| St. Jacob | Village | Madison | 977 | 1,098 | 1,230 | → |
| St. Johns | Village | Perry | 236 | 219 | 209 | → |
| St. Joseph | Village | Champaign | 2,895 | 3,996 | 3,959 | → |
| St. Libory | Village | St. Clair | 583 | 609 | 603 | → |
| St. Peter | Village | Fayette | 386 | 359 | 350 | → |
| St. Rose | Village | Clinton | ... | 403 | 404 | → |
| Standard | Village | Putnam | 259 | 220 | 203 | → |
| Standard City | Village | Macoupin | 136 | 152 | 146 | → |
| Stanford | Village | McLean | 698 | 596 | 586 | → |
| Staunton | City | Macoupin | 5,158 | 5,230 | 4,985 | → |
| Ste. Marie | Village | Jasper | 266 | 244 | 239 | → |
| Steeleville | Village | Randolph | 2,057 | 2,083 | 1,955 | → |
| Steger | Village | Cook / Will | 9,641 | 9,567 | 9,411 | → |
| Sterling | City | Whiteside | 15,951 | 15,438 | 14,766 | → |
| Steward | Village | Lee | 271 | 256 | 242 | → |
| Stewardson | Village | Shelby | 758 | 734 | 723 | → |
| Stickney | Village | Cook | 6,150 | 6,786 | 6,694 | → |
| Stillman Valley | Village | Ogle | 1,036 | 1,120 | 1,054 | → |
| Stockton | Village | Jo Daviess | 1,937 | 1,869 | 1,746 | → |
| Stone Park | Village | Cook | 5,098 | 4,946 | 4,892 | → |
| Stonefort | Village | Williamson / Saline | 292 | 297 | 288 | → |
| Stonington | Village | Christian | 960 | 932 | 868 | → |
| Stoy | Village | Crawford | ... | 115 | 109 | → |
| Strasburg | Village | Shelby | 595 | 467 | 442 | → |
| Strawn | Village | Livingston | 105 | 100 | 95 | → |
| Streamwood | Village | Cook | 36,490 | 39,839 | 39,978 | → |
| Streator | City | Livingston / LaSalle | 14,057 | 13,851 | 13,135 | → |
| Stronghurst | Village | Henderson | 893 | 883 | 806 | → |
| Sublette | Village | Lee | 456 | 449 | 426 | → |
| Sugar Grove | Village | Kane | 3,977 | 8,999 | 9,830 | → |
| Sullivan | City | Moultrie | 4,363 | 4,450 | 4,458 | → |
| Summerfield | Village | St. Clair | 483 | 432 | 403 | → |
| Summit | Village | Cook | 10,637 | 11,054 | 11,278 | → |
| Sumner | City | Lawrence | 1,011 | 3,174 | 3,160 | → |
| Sun River Terrace | Village | Kankakee | 435 | 528 | 504 | → |
| Swansea | Village | St. Clair | 11,048 | 13,460 | 13,518 | → |
| Sycamore | City | DeKalb | 12,075 | 17,521 | 18,022 | → |
| Symerton | Village | Will | 112 | 87 | 89 | → |
| Table Grove | Village | Fulton | 389 | 416 | 389 | → |
| Tallula | Village | Menard | 638 | 488 | 473 | → |
| Tamaroa | Village | Perry | 760 | 638 | 604 | → |
| Tamms | Village | Alexander | ... | 1,043 | 514 | → |
| Tampico | Village | Whiteside | 776 | 790 | 744 | → |
| Taylor Springs | Village | Montgomery | 576 | 690 | 662 | → |
| Taylorville | City | Christian | 12,584 | 11,278 | 10,650 | → |
| Tennessee | Village | McDonough | 147 | 115 | 109 | → |
| Teutopolis | Village | Effingham | 1,567 | 1,533 | 1,588 | → |
| Thawville | Village | Iroquois | 254 | 241 | 253 | → |
| Thayer | Village | Sangamon | 771 | 693 | 668 | → |
| Thebes | Village | Alexander | 455 | 437 | 352 | → |
| Third Lake | Village | Lake | 1,337 | 1,181 | 1,171 | → |
| Thomasboro | Village | Champaign | 1,219 | 1,126 | 1,110 | → |
| Thompsonville | Village | Franklin | 559 | 543 | 530 | → |
| Thomson | Village | Carroll | 560 | 590 | 561 | → |
| Thornton | Village | Cook | 2,516 | 2,386 | 2,448 | → |
| Tilden | Village | Randolph | 913 | 934 | 895 | → |
| Tilton | Village | Vermilion | 3,039 | 2,723 | 2,584 | → |
| Timberlane | Village | Boone | 249 | 934 | 943 | → |
| Time | Village | Pike | 29 | 23 | 22 | → |
| Tinley Park | Village | Cook / Will | 48,741 | 56,822 | 56,668 | → |
| Tiskilwa | Village | Bureau | 795 | 829 | 778 | → |
| Toledo | Village | Cumberland | 1,224 | 1,238 | 1,220 | → |
| Tolono | Village | Champaign | 2,740 | 3,453 | 3,449 | → |
| Toluca | City | Marshall | 1,343 | 1,414 | 1,301 | → |
| Tonica | Village | LaSalle | 675 | 768 | 728 | → |
| Topeka | Village | Mason | 89 | 76 | 71 | → |
| Toulon | City | Stark | 1,388 | 1,292 | 1,177 | → |
| Tovey | Village | Christian | 524 | 512 | 486 | → |
| Towanda | Village | McLean | 505 | 482 | 466 | → |
| Tower Hill | Village | Shelby | 615 | 611 | 588 | → |
| Tower Lakes | Village | Lake | 1,248 | 1,278 | 1,250 | → |
| Tremont | Village | Tazewell | 2,033 | 2,236 | 2,141 | → |
| Trenton | City | Clinton | 2,582 | 2,715 | 2,619 | → |
| Trout Valley | Village | McHenry | 574 | 537 | 524 | → |
| Troy | City | Madison | 8,493 | 9,888 | 10,176 | → |
| Troy Grove | Village | LaSalle | 292 | 250 | 241 | → |
| Tuscola | City | Douglas | 4,431 | 4,480 | 4,409 | → |
| Ullin | Village | Pulaski | 788 | 463 | 413 | → |
| Union | Village | McHenry | 577 | 580 | 561 | → |
| Union Hill | Village | Kankakee | 61 | 58 | 56 | → |
| University Park | Village | Cook / Will | 6,661 | 7,119 | 7,006 | → |
| Urbana | City | Champaign | 37,075 | 41,606 | 41,989 | → |
| Ursa | Village | Adams | 602 | 626 | 610 | → |
| Valier | Village | Franklin | 665 | 669 | 649 | → |
| Valley City | Village | Pike | 11 | 13 | 12 | → |
| Valmeyer | Village | Monroe | 612 | 1,250 | 1,256 | → |
| Vandalia | City | Fayette | 7,027 | 7,043 | 7,012 | → |
| Varna | Village | Marshall | 425 | 384 | 358 | → |
| Venedy | Village | Washington | 137 | 138 | 133 | → |
| Venice | City | Madison | 2,538 | 1,890 | 1,895 | → |
| Vergennes | Village | Jackson | 330 | 298 | 285 | → |
| Vermilion | Village | Edgar | 242 | 225 | 207 | → |
| Vermont | Village | Fulton | 777 | 667 | 645 | → |
| Vernon | Village | Marion | 192 | 129 | 124 | → |
| Vernon Hills | Village | Lake | 20,101 | 25,027 | 26,253 | → |
| Verona | Village | Grundy | 253 | 215 | 208 | → |
| Versailles | Village | Brown | 569 | 478 | 461 | → |
| Victoria | Village | Knox | 333 | 316 | 296 | → |
| Vienna | City | Johnson | 1,247 | 1,434 | 1,687 | → |
| Villa Grove | City | Douglas | 2,534 | 2,537 | 2,466 | → |
| Villa Park | Village | DuPage | 22,474 | 22,026 | 21,836 | → |
| Viola | Village | Mercer | 947 | 955 | 899 | → |
| Virden | City | Sangamon / Macoupin | 3,420 | 3,525 | 3,366 | → |
| Virgil | Village | Kane | 337 | 329 | 334 | → |
| Virginia | City | Cass | 1,735 | 1,611 | 1,476 | → |
| Volo | Village | Lake | 226 | 2,906 | 5,462 | → |
| Wadsworth | Village | Lake | 3,447 | 3,751 | 3,707 | → |
| Waggoner | Village | Montgomery | 244 | 266 | 256 | → |
| Walnut | Village | Bureau | 1,456 | 1,416 | 1,335 | → |
| Walnut Hill | Village | Marion | 109 | 108 | 104 | → |
| Walshville | Village | Montgomery | 89 | 64 | 63 | → |
| Waltonville | Village | Jefferson | 414 | 434 | 427 | → |
| Wamac | City | Washington / Marion / Clinton | 1,375 | 1,185 | 1,135 | → |
| Wapella | Village | De Witt | 645 | 558 | 535 | → |
| Warren | Village | Jo Daviess | 1,501 | 1,428 | 1,332 | → |
| Warrensburg | Village | Macon | 1,287 | 1,210 | 1,142 | → |
| Warrenville | City | DuPage | 13,465 | 13,178 | 13,269 | → |
| Warsaw | City | Hancock | 1,798 | 1,607 | 1,508 | → |
| Washburn | Village | Woodford / Marshall | 1,155 | 1,148 | 1,098 | → |
| Washington | City | Tazewell | 11,547 | 15,206 | 16,811 | → |
| Washington Park | Village | St. Clair | 5,932 | 4,196 | 3,933 | → |
| Wataga | Village | Knox | 872 | 843 | 800 | → |
| Waterloo | City | Monroe | 8,110 | 9,982 | 10,355 | → |
| Waterman | Village | DeKalb | 1,242 | 1,515 | 1,498 | → |
| Watseka | City | Iroquois | 5,715 | 5,297 | 4,919 | → |
| Watson | Village | Effingham | 758 | 754 | 740 | → |
| Wauconda | Village | Lake | 9,461 | 13,623 | 13,737 | → |
| Waukegan | City | Lake | 87,925 | 89,075 | 87,729 | → |
| Waverly | City | Morgan | 1,352 | 1,307 | 1,230 | → |
| Wayne | Village | DuPage / Kane | 2,176 | 2,409 | 2,439 | → |
| Wayne City | Village | Wayne | 1,102 | 1,032 | 1,021 | → |
| Waynesville | Village | De Witt | 450 | 428 | 417 | → |
| Weldon | Village | De Witt | 441 | 429 | 418 | → |
| Wellington | Village | Iroquois | 258 | 242 | 222 | → |
| Wenona | City | Marshall / LaSalle | 1,052 | 1,056 | 968 | → |
| Wenonah | Village | Montgomery | 44 | 37 | 35 | → |
| West Brooklyn | Village | Lee | 174 | 142 | 134 | → |
| West Chicago | City | DuPage | 23,491 | 27,200 | 27,182 | → |
| West City | Village | Franklin | 729 | 661 | 650 | → |
| West Dundee | Village | Kane | 5,420 | 7,331 | 7,352 | → |
| West Frankfort | City | Franklin | 8,317 | 8,177 | 7,953 | → |
| West Peoria | City | Peoria | 4,787 | 4,698 | 4,566 | → |
| West Point | Village | Hancock | 196 | 178 | 168 | → |
| West Salem | Village | Edwards | 1,011 | 897 | 866 | → |
| Westchester | Village | Cook | 16,816 | 16,715 | 16,461 | → |
| Western Springs | Village | Cook | 12,467 | 12,948 | 13,479 | → |
| Westfield | Village | Clark | 678 | 601 | 571 | → |
| Westmont | Village | DuPage | 25,081 | 24,658 | 24,756 | → |
| Westville | Village | Vermilion | 3,172 | 3,197 | 3,039 | → |
| Wheaton | City | DuPage | 55,339 | 52,999 | 53,373 | → |
| Wheeler | Village | Jasper | 131 | 147 | 145 | → |
| Wheeling | Village | Lake / Cook | 36,256 | 37,642 | 38,562 | → |
| White City | Village | Macoupin | 207 | 232 | 227 | → |
| White Hall | City | Greene | 2,637 | 2,520 | 2,372 | → |
| Williamsfield | Village | Knox | 607 | 578 | 555 | → |
| Williamson | Village | Madison | 255 | 230 | 220 | → |
| Williamsville | Village | Sangamon | 1,438 | 1,476 | 1,494 | → |
| Willisville | Village | Perry | 711 | 633 | 602 | → |
| Willow Hill | Village | Jasper | 251 | 230 | 227 | → |
| Willow Springs | Village | Cook | 4,954 | 5,665 | 5,643 | → |
| Willowbrook | Village | DuPage | 8,766 | 8,542 | 8,521 | → |
| Wilmette | Village | Cook | 27,605 | 27,058 | 27,418 | → |
| Wilmington | Village | Greene | 131 | 142 | 134 | → |
| Wilmington | City | Will | 5,198 | 5,720 | 5,691 | → |
| Wilsonville | Village | Macoupin | 606 | 586 | 560 | → |
| Winchester | City | Scott | 1,665 | 1,593 | 1,480 | → |
| Windsor | Village | Mercer | 722 | 748 | 784 | → |
| Windsor | City | Shelby | 1,179 | 1,187 | 1,154 | → |
| Winfield | Village | DuPage | 8,862 | 9,092 | 9,685 | → |
| Winnebago | Village | Winnebago | 2,965 | 3,101 | 2,989 | → |
| Winnetka | Village | Cook | 12,584 | 12,198 | 12,480 | → |
| Winslow | Village | Stephenson | 343 | 338 | 319 | → |
| Winthrop Harbor | Village | Lake | 6,717 | 6,869 | 6,745 | → |
| Witt | City | Montgomery | 991 | 903 | 858 | → |
| Wonder Lake | Village | McHenry | 2,882 | 4,014 | 3,905 | → |
| Wood Dale | City | DuPage | 13,539 | 13,770 | 13,798 | → |
| Wood River | City | Madison | 11,270 | 10,657 | 10,263 | → |
| Woodhull | Village | Henry | 810 | 811 | 783 | → |
| Woodland | Village | Iroquois | 321 | 324 | 309 | → |
| Woodlawn | Village | Jefferson | 736 | 696 | 685 | → |
| Woodridge | Village | DuPage / Will | 30,875 | 32,977 | 33,598 | → |
| Woodson | Village | Morgan | 550 | 512 | 490 | → |
| Woodstock | City | McHenry | 20,096 | 24,755 | 25,286 | → |
| Worden | Village | Madison | 896 | 1,044 | 1,030 | → |
| Worth | Village | Cook | 10,880 | 10,789 | 10,661 | → |
| Wyanet | Village | Bureau | 1,024 | 991 | 943 | → |
| Wyoming | City | Stark | 1,452 | 1,429 | 1,295 | → |
| Xenia | Village | Clay | 401 | 392 | 375 | → |
| Yale | Village | Jasper | 105 | 86 | 85 | → |
| Yates City | Village | Knox | 729 | 691 | 663 | → |
| Yorkville | City | Kendall | 6,451 | 16,927 | 19,388 | → |
| Zeigler | City | Franklin | 1,669 | 1,801 | 1,742 | → |
| Zion | City | Lake | 23,312 | 24,400 | 23,952 | → |
Source: U.S. Census Bureau (web).
Explanation: Places: 2000 population in the boundaries of 2010 and later population figures in the boundaries of 2017.