| City | 2025 Pop. ↓ |
|---|---|
| Aurora | 180,822 |
| Arlington Heights | 75,145 |
| Addison | 35,752 |
| Algonquin | 30,754 |
| Alton | 24,799 |
| Alsip | 18,357 |
| Antioch | 15,230 |
| Auburn | 4,429 |
| Anna | 4,135 |
| Aledo | 3,497 |
| Arcola | 2,911 |
| Abingdon | 2,851 |
| Aviston | 2,454 |
| Arthur | 2,279 |
| Amboy | 2,211 |
| Altamont | 2,195 |
| Athens | 1,887 |
| Albion | 1,849 |
| Arbury Hills | 1,794 |
| Atlanta | 1,627 |
| Ashland | 1,181 |
| Andalusia | 1,164 |
| Albers | 1,120 |
| Assumption | 1,115 |
| Atwood | 1,092 |
| Ashton | 933 |
| Atkinson | 923 |
| Astoria | 877 |
| Argenta | 872 |
| Annawan | 854 |
| Albany | 848 |
| Alexis | 747 |
| Apple Canyon Lake | 740 |
| Argyle | 720 |
| Ashkum | 709 |
| Avon | 664 |
| Aroma Park | 650 |
| Alpha | 648 |
| Ashmore | 624 |
| Alhambra | 598 |
| Ava | 546 |
| Andover | 535 |
| Augusta | 534 |
| Altona | 448 |
| Ashley | 444 |
| Allendale | 439 |
| Arenzville | 356 |
| Alexander | 340 |
| Apple River | 331 |
| Alma | 303 |
| Alto Pass | 303 |
| Armington | 302 |
| Arrowsmith | 270 |
| Adair | 256 |
| Addieville | 252 |
| Allerton | 250 |
| Alvan (Alvin) | 221 |
| Alden | 210 |
| Alsey | 180 |
| Arlington | 164 |
| Anchor | 159 |
| Allenville | 129 |
| Adeline | 74 |
| Annapolis | 71 |
| Andres | 51 |
| Adams | 49 |
| City | 2025 Pop. ↓ |
|---|---|
| Decatur | 68,209 |
| Des Plaines | 58,426 |
| Downers Grove | 50,644 |
| DeKalb | 40,557 |
| Danville | 27,694 |
| Darien | 22,019 |
| Dolton | 20,537 |
| Deerfield | 19,140 |
| Dixon | 15,103 |
| Du Quoin | 5,561 |
| Dwight | 4,033 |
| Dupo | 3,752 |
| Deer Park | 3,666 |
| Dixmoor | 2,928 |
| Diamond | 2,719 |
| Davis Junction | 2,539 |
| Dunlap | 1,592 |
| De Pue | 1,560 |
| Delavan | 1,537 |
| De Soto | 1,408 |
| Durand | 1,381 |
| Downs | 1,181 |
| Divernon | 1,110 |
| Danvers | 1,073 |
| Dieterich | 874 |
| Dallas City | 770 |
| Deer Creek | 646 |
| Dongola | 641 |
| Dalzell | 638 |
| Danforth | 564 |
| Davis | 562 |
| Damiansville | 556 |
| Dawson | 509 |
| Dahlgren | 490 |
| Dayton | 488 |
| Dakota | 474 |
| Dix | 453 |
| De Land | 440 |
| Dalton City | 431 |
| Dundas | 384 |
| Dowell | 367 |
| Dunfermline | 249 |
| Donovan | 235 |
| Du Bois | 179 |
| De Witt | 165 |
| Dewey | 159 |
| Dana | 156 |
| Donnellson | 148 |
| Dover | 132 |
| Dorchester | 124 |
| Detroit | 74 |
| Deer Grove | 39 |
| City | 2025 Pop. ↓ |
|---|---|
| Elgin | 114,715 |
| Evanston | 75,553 |
| Elmhurst | 46,203 |
| Elk Grove Village | 31,578 |
| Edwardsville | 26,690 |
| Elmwood Park | 23,515 |
| East Peoria | 21,919 |
| East Moline | 20,915 |
| Evergreen Park | 19,159 |
| East St. Louis | 17,659 |
| Effingham | 12,460 |
| Elburn | 6,980 |
| East Alton | 5,584 |
| Eureka | 5,182 |
| Eldorado | 3,545 |
| East Dundee | 3,101 |
| El Paso | 2,728 |
| Elwood | 2,253 |
| Elmwood | 2,033 |
| Earlville | 1,594 |
| Erie | 1,485 |
| East Dubuque | 1,447 |
| East Hazel Crest | 1,245 |
| Edinburg | 1,049 |
| Energy | 953 |
| Essex | 856 |
| Elkville | 833 |
| Enfield | 773 |
| East Galesburg | 739 |
| Elizabeth | 683 |
| Evansville | 537 |
| Edgington | 519 |
| Elsah | 517 |
| Equality | 499 |
| East Lynn | 496 |
| Emden | 451 |
| Elkhart | 437 |
| Edgewood | 390 |
| East Carondelet | 369 |
| Ellis Grove | 328 |
| Easton | 298 |
| Ewing | 294 |
| Elliott | 274 |
| East Gillespie | 258 |
| East Cape Girardeau | 244 |
| Elizabethtown | 221 |
| Ellsworth | 179 |
| Eagle Lake | 145 |
| Elvaston | 144 |
| Eldred | 142 |
| Eagarville | 114 |
| Emington | 98 |
| Eddyville | 96 |
| Ellisville | 84 |
| Exeter | 83 |
| Elwin | 80 |
| East Brooklyn | 79 |
| El Dara | 61 |
| City | 2025 Pop. ↓ |
|---|---|
| Freeport | 22,935 |
| Frankfort | 21,372 |
| Franklin Park | 18,038 |
| Fairview Heights | 15,977 |
| Forest Park | 13,737 |
| Fox Lake | 10,915 |
| Frankfort Square | 9,390 |
| Flossmoor | 9,301 |
| Fairfield | 4,765 |
| Fox River Grove | 4,762 |
| Flora | 4,610 |
| Freeburg | 4,496 |
| Forsyth | 3,637 |
| Fulton | 3,564 |
| Fairbury | 3,555 |
| Fairmont | 2,629 |
| Fox Lake Hills | 2,350 |
| Farmington | 2,272 |
| Fairmont City | 2,147 |
| Fisher | 2,102 |
| Farmer City | 1,814 |
| Ford Heights | 1,738 |
| Forreston | 1,395 |
| Forest Lake | 1,265 |
| Flanagan | 1,019 |
| Forrest | 1,013 |
| Franklin Grove | 870 |
| Forest View | 759 |
| Farmersville | 662 |
| Findlay | 644 |
| Franklin | 585 |
| Fairmount | 582 |
| Farina | 528 |
| Fithian | 468 |
| Fairview | 406 |
| Flat Rock | 317 |
| Fillmore | 292 |
| Fayetteville | 284 |
| Freeman Spur | 270 |
| Forest City | 208 |
| Fieldon | 159 |
| Ferris | 118 |
| Fowler | 102 |
| Fidelity | 93 |
| Foosland | 75 |
| Floraville | 27 |
| Fults | 25 |
| Florence | 16 |
| City | 2025 Pop. ↓ |
|---|---|
| Glenview | 47,404 |
| Glendale Heights | 32,807 |
| Gurnee | 30,518 |
| Galesburg | 29,125 |
| Glen Ellyn | 28,854 |
| Granite City | 26,688 |
| Grayslake | 21,273 |
| Geneva | 21,125 |
| Godfrey | 17,559 |
| Glen Carbon | 13,890 |
| Gages Lake | 11,072 |
| Gilberts | 9,251 |
| Glencoe | 8,693 |
| Glenwood | 8,350 |
| Greenville | 7,100 |
| Geneseo | 6,493 |
| Genoa | 5,565 |
| Grandwood Park | 5,438 |
| Green Oaks | 4,106 |
| Germantown Hills | 3,456 |
| Gibson City | 3,437 |
| Galena | 3,179 |
| Gillespie | 3,068 |
| Georgetown | 2,968 |
| Galva | 2,380 |
| Girard | 1,759 |
| Gilman | 1,657 |
| Grayville | 1,491 |
| Gridley | 1,440 |
| Germantown | 1,401 |
| Grandview | 1,381 |
| Gardner | 1,367 |
| Greenup | 1,342 |
| Granville | 1,324 |
| Grant Park | 1,280 |
| Goreville | 1,051 |
| Griggsville | 1,041 |
| Greenfield | 994 |
| Goodfield | 960 |
| Gifford | 906 |
| Glasford | 846 |
| Grafton | 803 |
| Galatia | 778 |
| Greenview | 718 |
| Godley | 649 |
| Golden | 621 |
| Golconda | 619 |
| Green Valley | 594 |
| Grand Ridge | 506 |
| Golf | 502 |
| Grand Tower | 474 |
| Georgetown | 428 |
| German Valley | 413 |
| Garden Prairie | 410 |
| Good Hope | 351 |
| Grantfork | 338 |
| Greenwood | 315 |
| Grand Detour | 270 |
| Gladstone | 218 |
| Gays | 208 |
| Goofy Ridge | 172 |
| Gorham | 171 |
| Galt | 142 |
| Garrett | 129 |
| Glasgow | 106 |
| Gilson | 104 |
| Golden Gate | 61 |
| Gulfport | 37 |
| Goodenow | 11 |
| City | 2025 Pop. ↓ |
|---|---|
| Itasca | 9,497 |
| Island Lake | 8,073 |
| Inverness | 7,386 |
| Indian Head Park | 3,930 |
| Ingalls Park | 3,049 |
| Ina | 1,647 |
| Illiopolis | 831 |
| Irvington | 562 |
| Indian Creek | 535 |
| Iuka | 485 |
| Ipava | 422 |
| Industry | 385 |
| Irving | 360 |
| Ivesdale | 261 |
| Indianola | 217 |
| Iroquois | 130 |
| Iola | 95 |
| Irwin | 66 |
| Illinois City | 46 |
| City | 2025 Pop. ↓ |
|---|---|
| Joliet | 152,208 |
| Jacksonville | 17,690 |
| Justice | 12,192 |
| Jerseyville | 8,356 |
| Johnsburg | 6,443 |
| Johnston City | 3,291 |
| Jonesboro | 1,642 |
| Jerome | 1,636 |
| Junction City | 521 |
| Joy | 356 |
| Jeffersonville | 348 |
| Joppa | 328 |
| Jewett | 193 |
| Jeisyville | 99 |
| Joslin | 74 |
| Johnsonville | 70 |
| Janesville | 55 |
| Junction | 53 |
| City | 2025 Pop. ↓ |
|---|---|
| Kankakee | 23,417 |
| Kewanee | 12,065 |
| Kildeer | 4,672 |
| Knoxville | 2,826 |
| Kenilworth | 2,419 |
| Knollwood | 1,767 |
| Kirkland | 1,614 |
| Kincaid | 1,305 |
| Kingston | 1,092 |
| Kinmundy | 706 |
| Kansas | 644 |
| Kirkwood | 640 |
| Keithsburg | 545 |
| Kaneville | 445 |
| Kings | 434 |
| Keyesport | 402 |
| Karnak | 397 |
| Kenney | 306 |
| Kampsville | 288 |
| Kane | 276 |
| Kingston Mines | 266 |
| Kilbourne | 256 |
| Kappa | 232 |
| Kangley | 228 |
| Kinderhook | 182 |
| Kempton | 177 |
| Keensburg | 170 |
| Kell | 169 |
| Kingston | 148 |
| Kinsman | 86 |
| Keenes | 49 |
| Kaskaskia | 23 |
| City | 2025 Pop. ↓ |
|---|---|
| Naperville | 154,046 |
| Normal | 53,374 |
| Northbrook | 34,394 |
| North Chicago | 30,613 |
| Niles | 29,700 |
| New Lenox | 28,789 |
| North Aurora | 19,589 |
| Norridge | 14,721 |
| Northlake | 12,343 |
| North Riverside | 7,103 |
| Northfield | 5,596 |
| New Baden | 3,387 |
| North Barrington | 3,143 |
| Nashville | 2,983 |
| Newton | 2,710 |
| Nokomis | 2,113 |
| New Athens | 1,850 |
| North Pekin | 1,430 |
| Neoga | 1,379 |
| New Berlin | 1,354 |
| North Utica | 1,347 |
| Norris City | 1,090 |
| Newark | 981 |
| Nauvoo | 902 |
| New Milford | 808 |
| Newman | 771 |
| Noble | 608 |
| New Boston | 602 |
| Niantic | 582 |
| North City | 496 |
| Norwood | 432 |
| Naplate | 412 |
| Neponset | 404 |
| New Haven | 374 |
| New Douglas | 337 |
| New Canton | 322 |
| Nebo | 270 |
| New Holland | 265 |
| Nason | 195 |
| Nilwood | 195 |
| Nachusa | 172 |
| Norris | 165 |
| New Minden | 162 |
| North Henderson | 158 |
| New Burnside | 152 |
| New Grand Chain | 143 |
| Nelson | 124 |
| New Salem | 115 |
| Nora | 109 |
| Naples | 96 |
| New Bedford | 74 |
| Nekoma | 65 |
| Niota | 16 |
| City | 2025 Pop. ↓ |
|---|---|
| Orland Park | 57,888 |
| Oak Lawn | 56,126 |
| Oak Park | 52,540 |
| Oswego | 39,786 |
| O'Fallon | 32,108 |
| Oak Forest | 26,673 |
| Ottawa | 18,763 |
| Olney | 8,366 |
| Oak Brook | 8,198 |
| Orland Hills | 6,629 |
| Olympia Fields | 4,563 |
| Oglesby | 3,609 |
| Oregon | 3,555 |
| Oakbrook Terrace | 2,724 |
| Oakwood Hills | 2,056 |
| Orion | 1,704 |
| Oblong | 1,344 |
| Okawville | 1,342 |
| Onarga | 1,282 |
| Oakwood | 1,263 |
| Oquawka | 1,060 |
| Odell | 977 |
| Odin | 894 |
| Oreana | 850 |
| Orangeville | 732 |
| Ogden | 729 |
| Oakland | 716 |
| Oak Run | 704 |
| Oneida | 677 |
| Olive Branch | 506 |
| Oak Grove | 469 |
| Ohio | 455 |
| Orient | 319 |
| Olmsted | 262 |
| Opdyke | 260 |
| Ophiem | 238 |
| Oakford | 226 |
| Omaha | 203 |
| Owaneco | 202 |
| Oakdale | 197 |
| Old Mill Creek | 159 |
| Osco | 149 |
| Oconee | 135 |
| Ohlman | 106 |
| Old Shawneetown | 102 |
| Olivet | 93 |
| Otterville | 82 |
| Old Ripley | 79 |
| Oxville | 29 |
| City | 2025 Pop. ↓ |
|---|---|
| Quincy | 38,588 |
| City | 2025 Pop. ↓ |
|---|---|
| Tinley Park | 54,613 |
| Troy | 11,899 |
| Taylorville | 10,204 |
| Tuscola | 4,661 |
| Tolono | 3,580 |
| Trenton | 2,649 |
| Tilton | 2,507 |
| Thornton | 2,281 |
| Tremont | 2,240 |
| The Galena Territory | 1,743 |
| Teutopolis | 1,710 |
| Thomson | 1,591 |
| Twin Grove | 1,374 |
| Toluca | 1,315 |
| Tower Lakes | 1,210 |
| Toulon | 1,159 |
| Toledo | 1,137 |
| Third Lake | 1,113 |
| Thomasboro | 1,021 |
| Timberlane | 901 |
| Tilden | 750 |
| Tonica | 733 |
| Taylor Springs | 722 |
| Tiskilwa | 707 |
| Tampico | 670 |
| Thayer | 612 |
| Trivoli | 542 |
| Tamaroa | 523 |
| Trout Valley | 506 |
| Thompsonville | 477 |
| Tower Hill | 471 |
| Tovey | 443 |
| Towanda | 424 |
| Tallula | 421 |
| Tamms | 361 |
| Table Grove | 329 |
| Troy Grove | 221 |
| Thawville | 202 |
| Thebes | 176 |
| Taylor Ridge | 164 |
| Trilla | 160 |
| Triumph | 106 |
| Tennessee | 100 |
| Topeka | 55 |
| City | 2025 Pop. ↓ |
|---|---|
| Urbana | 40,072 |
| University Park | 7,021 |
| Union | 725 |
| Ursa | 583 |
| Ullin | 455 |
| Unity | 68 |
| Union Hill | 51 |
| City | 2025 Pop. ↓ |
|---|---|
| Vernon Hills | 27,046 |
| Villa Park | 21,973 |
| Volo | 7,648 |
| Vandalia | 7,333 |
| Virden | 3,128 |
| Venetian Village | 2,697 |
| Villa Grove | 2,442 |
| Virginia | 1,460 |
| Venice | 1,442 |
| Vienna | 1,349 |
| Valmeyer | 1,210 |
| Viola | 837 |
| Vermont | 556 |
| Valier | 535 |
| Versailles | 456 |
| Varna | 371 |
| Virgil | 283 |
| Victoria | 257 |
| Vergennes | 236 |
| Verona | 207 |
| Vermilion | 192 |
| Venedy | 122 |
| Vernon | 99 |
| Valley City | 15 |
| City | 2025 Pop. ↓ |
|---|---|
| Xenia | 366 |
| City | 2025 Pop. ↓ |
|---|---|
| Yorkville | 27,041 |
| Yates City | 633 |
| Yale | 65 |