| City | 2026 Pop. ↓ |
|---|---|
| Aurora | 180,935 |
| Arlington Heights | 74,694 |
| Addison | 35,776 |
| Algonquin | 30,969 |
| Alton | 24,632 |
| Alsip | 18,229 |
| Antioch | 15,353 |
| Auburn | 4,406 |
| Anna | 4,106 |
| Aledo | 3,473 |
| Arcola | 2,907 |
| Abingdon | 2,832 |
| Aviston | 2,475 |
| Arthur | 2,289 |
| Amboy | 2,198 |
| Altamont | 2,190 |
| Athens | 1,871 |
| Albion | 1,831 |
| Arbury Hills | 1,733 |
| Atlanta | 1,620 |
| Ashland | 1,174 |
| Andalusia | 1,162 |
| Albers | 1,118 |
| Assumption | 1,107 |
| Atwood | 1,087 |
| Ashton | 927 |
| Atkinson | 917 |
| Astoria | 868 |
| Argenta | 864 |
| Apple Canyon Lake | 850 |
| Annawan | 848 |
| Albany | 846 |
| Alexis | 739 |
| Ashkum | 702 |
| Argyle | 690 |
| Avon | 657 |
| Aroma Park | 648 |
| Alpha | 644 |
| Ashmore | 622 |
| Alhambra | 595 |
| Ava | 546 |
| Andover | 531 |
| Augusta | 530 |
| Altona | 445 |
| Ashley | 441 |
| Allendale | 436 |
| Arenzville | 354 |
| Apple River | 329 |
| Alexander | 318 |
| Alma | 301 |
| Alto Pass | 301 |
| Armington | 300 |
| Arrowsmith | 269 |
| Addieville | 251 |
| Allerton | 247 |
| Alvan (Alvin) | 219 |
| Alsey | 178 |
| Arlington | 163 |
| Anchor | 159 |
| Adams | 149 |
| Adair | 134 |
| Allenville | 129 |
| Adeline | 74 |
| Annapolis | 63 |
| Andres | 52 |
| Alden | 44 |
| City | 2026 Pop. ↓ |
|---|---|
| Decatur | 67,655 |
| Des Plaines | 58,020 |
| Downers Grove | 50,737 |
| DeKalb | 40,624 |
| Danville | 27,408 |
| Darien | 22,023 |
| Dolton | 20,378 |
| Deerfield | 19,142 |
| Dixon | 15,051 |
| Du Quoin | 5,511 |
| Dwight | 4,035 |
| Dupo | 3,707 |
| Deer Park | 3,663 |
| Dixmoor | 2,912 |
| Diamond | 2,737 |
| Davis Junction | 2,545 |
| Dunlap | 1,588 |
| De Pue | 1,548 |
| Delavan | 1,530 |
| De Soto | 1,408 |
| Durand | 1,380 |
| Downs | 1,178 |
| Divernon | 1,104 |
| Danvers | 1,070 |
| Dieterich | 870 |
| Dallas City | 763 |
| Deer Creek | 643 |
| Dongola | 637 |
| Dalzell | 633 |
| Danforth | 559 |
| Davis | 557 |
| Damiansville | 554 |
| Dawson | 508 |
| Dahlgren | 488 |
| Dakota | 469 |
| Dix | 451 |
| De Land | 438 |
| Dalton City | 426 |
| Dowell | 367 |
| Dundas | 325 |
| Dayton | 323 |
| Dunfermline | 247 |
| Donovan | 233 |
| Du Bois | 179 |
| De Witt | 166 |
| Dana | 156 |
| Donnellson | 147 |
| Dover | 131 |
| Dorchester | 123 |
| Dewey | 87 |
| Detroit | 74 |
| Deer Grove | 40 |
| City | 2026 Pop. ↓ |
|---|---|
| Elgin | 114,729 |
| Evanston | 75,100 |
| Elmhurst | 46,298 |
| Elk Grove Village | 31,354 |
| Edwardsville | 26,666 |
| Elmwood Park | 23,333 |
| East Peoria | 21,814 |
| East Moline | 20,836 |
| Evergreen Park | 19,018 |
| East St. Louis | 17,511 |
| Effingham | 12,487 |
| Elburn | 7,134 |
| East Alton | 5,547 |
| Eureka | 5,175 |
| Eldorado | 3,508 |
| East Dundee | 3,086 |
| El Paso | 2,724 |
| Elwood | 2,259 |
| Elmwood | 2,026 |
| Earlville | 1,591 |
| Erie | 1,479 |
| East Dubuque | 1,437 |
| East Hazel Crest | 1,236 |
| Edinburg | 1,043 |
| Energy | 950 |
| Essex | 860 |
| Elkville | 833 |
| Enfield | 769 |
| East Galesburg | 735 |
| Elizabeth | 678 |
| Edgington | 558 |
| Evansville | 535 |
| Elsah | 516 |
| Equality | 492 |
| East Lynn | 485 |
| Emden | 449 |
| Elkhart | 435 |
| Edgewood | 389 |
| East Carondelet | 365 |
| Ellis Grove | 328 |
| Easton | 295 |
| Ewing | 292 |
| Elliott | 274 |
| East Gillespie | 256 |
| East Cape Girardeau | 236 |
| Elizabethtown | 219 |
| Eagle Lake | 202 |
| Ellsworth | 178 |
| Elvaston | 143 |
| Eldred | 141 |
| Eagarville | 114 |
| Emington | 98 |
| Eddyville | 96 |
| Ellisville | 83 |
| Exeter | 82 |
| East Brooklyn | 80 |
| El Dara | 61 |
| Elwin | 41 |
| City | 2026 Pop. ↓ |
|---|---|
| Freeport | 22,730 |
| Frankfort | 21,584 |
| Franklin Park | 17,967 |
| Fairview Heights | 15,839 |
| Forest Park | 13,629 |
| Fox Lake | 10,906 |
| Frankfort Square | 9,893 |
| Flossmoor | 9,232 |
| Fox River Grove | 4,777 |
| Fairfield | 4,741 |
| Flora | 4,573 |
| Freeburg | 4,475 |
| Forsyth | 3,618 |
| Fulton | 3,548 |
| Fairbury | 3,540 |
| Fairmont | 2,397 |
| Farmington | 2,250 |
| Fox Lake Hills | 2,238 |
| Fairmont City | 2,126 |
| Fisher | 2,112 |
| Forest Lake | 1,829 |
| Farmer City | 1,811 |
| Ford Heights | 1,724 |
| Forreston | 1,387 |
| Flanagan | 1,015 |
| Forrest | 1,007 |
| Franklin Grove | 865 |
| Forest View | 753 |
| Farmersville | 658 |
| Findlay | 640 |
| Franklin | 580 |
| Fairmount | 576 |
| Farina | 525 |
| Fithian | 463 |
| Fairview | 402 |
| Flat Rock | 316 |
| Fillmore | 290 |
| Fayetteville | 282 |
| Freeman Spur | 269 |
| Forest City | 206 |
| Fieldon | 157 |
| Fowler | 118 |
| Ferris | 117 |
| Fidelity | 92 |
| Foosland | 75 |
| Fults | 25 |
| Florence | 16 |
| City | 2026 Pop. ↓ |
|---|---|
| Glenview | 47,174 |
| Glendale Heights | 32,749 |
| Gurnee | 30,490 |
| Galesburg | 28,962 |
| Glen Ellyn | 28,837 |
| Granite City | 26,522 |
| Grayslake | 21,284 |
| Geneva | 21,083 |
| Godfrey | 17,509 |
| Glen Carbon | 13,897 |
| Gages Lake | 10,823 |
| Gilberts | 9,427 |
| Glencoe | 8,666 |
| Glenwood | 8,287 |
| Greenville | 7,074 |
| Geneseo | 6,483 |
| Genoa | 5,617 |
| Grandwood Park | 5,336 |
| Green Oaks | 4,105 |
| Germantown Hills | 3,463 |
| Gibson City | 3,430 |
| Galena | 3,151 |
| Gillespie | 3,049 |
| Georgetown | 2,935 |
| Galva | 2,364 |
| Girard | 1,749 |
| Gilman | 1,640 |
| Grayville | 1,480 |
| Gridley | 1,437 |
| Germantown | 1,415 |
| Grandview | 1,375 |
| Gardner | 1,369 |
| Greenup | 1,337 |
| Granville | 1,318 |
| Grant Park | 1,278 |
| Goreville | 1,049 |
| Griggsville | 1,031 |
| Greenfield | 983 |
| Goodfield | 963 |
| Gifford | 906 |
| Glasford | 843 |
| Grafton | 835 |
| Galatia | 770 |
| Greenview | 712 |
| Garden Prairie | 689 |
| Godley | 664 |
| Golconda | 616 |
| Golden | 616 |
| Green Valley | 590 |
| Grand Ridge | 504 |
| Golf | 501 |
| Grand Tower | 474 |
| German Valley | 409 |
| Good Hope | 349 |
| Grantfork | 338 |
| Greenwood | 315 |
| Grand Detour | 248 |
| Gladstone | 215 |
| Gays | 206 |
| Galt | 201 |
| Gorham | 171 |
| Gilson | 140 |
| Garrett | 129 |
| Glasgow | 105 |
| Goofy Ridge | 101 |
| Golden Gate | 61 |
| Gulfport | 37 |
| City | 2026 Pop. ↓ |
|---|---|
| Itasca | 9,488 |
| Island Lake | 8,081 |
| Inverness | 7,344 |
| Indian Head Park | 3,905 |
| Ingalls Park | 2,891 |
| Ina | 1,647 |
| Illiopolis | 829 |
| Irvington | 558 |
| Indian Creek | 536 |
| Iuka | 481 |
| Ipava | 418 |
| Industry | 383 |
| Irving | 358 |
| Ivesdale | 261 |
| Indianola | 215 |
| Iroquois | 129 |
| Iola | 94 |
| Irwin | 66 |
| Illinois City | 22 |
| City | 2026 Pop. ↓ |
|---|---|
| Joliet | 152,579 |
| Jacksonville | 17,579 |
| Justice | 12,118 |
| Jerseyville | 8,363 |
| Johnsburg | 6,458 |
| Johnston City | 3,274 |
| Jonesboro | 1,630 |
| Jerome | 1,626 |
| Junction City | 519 |
| Joy | 354 |
| Jeffersonville | 347 |
| Joppa | 324 |
| Jewett | 192 |
| Jeisyville | 98 |
| Johnsonville | 70 |
| Joslin | 54 |
| Junction | 52 |
| Janesville | 17 |
| City | 2026 Pop. ↓ |
|---|---|
| Kankakee | 23,299 |
| Kewanee | 11,985 |
| Kildeer | 4,791 |
| Knoxville | 2,813 |
| Kenilworth | 2,402 |
| Knollwood | 1,944 |
| Kirkland | 1,608 |
| Kincaid | 1,296 |
| Kingston | 1,090 |
| Kinmundy | 701 |
| Kansas | 640 |
| Kirkwood | 633 |
| Keithsburg | 545 |
| Kaneville | 443 |
| Keyesport | 402 |
| Kings | 396 |
| Karnak | 392 |
| Kenney | 306 |
| Kampsville | 285 |
| Kane | 273 |
| Kingston Mines | 265 |
| Kilbourne | 254 |
| Kingston | 242 |
| Kappa | 232 |
| Kangley | 227 |
| Kinderhook | 181 |
| Kempton | 177 |
| Keensburg | 169 |
| Kell | 168 |
| Kinsman | 86 |
| Keenes | 49 |
| Kaskaskia | 23 |
| City | 2026 Pop. ↓ |
|---|---|
| Naperville | 154,969 |
| Normal | 53,444 |
| Northbrook | 34,243 |
| North Chicago | 30,588 |
| Niles | 29,482 |
| New Lenox | 29,098 |
| North Aurora | 19,849 |
| Norridge | 14,625 |
| Northlake | 12,253 |
| North Riverside | 7,045 |
| Northfield | 5,567 |
| New Baden | 3,380 |
| North Barrington | 3,145 |
| Nashville | 2,960 |
| Newton | 2,698 |
| Nokomis | 2,099 |
| New Athens | 1,831 |
| North Pekin | 1,422 |
| Neoga | 1,376 |
| North Utica | 1,352 |
| New Berlin | 1,349 |
| Norris City | 1,081 |
| Newark | 982 |
| Nauvoo | 895 |
| New Milford | 809 |
| Newman | 770 |
| Noble | 604 |
| New Boston | 600 |
| Niantic | 577 |
| North City | 493 |
| Norwood | 431 |
| Naplate | 411 |
| Neponset | 401 |
| New Haven | 369 |
| New Douglas | 336 |
| New Canton | 320 |
| Nebo | 269 |
| New Holland | 264 |
| Nason | 194 |
| Nilwood | 194 |
| Norris | 163 |
| New Minden | 161 |
| North Henderson | 157 |
| New Burnside | 152 |
| Nachusa | 151 |
| New Grand Chain | 141 |
| Nelson | 123 |
| New Salem | 114 |
| Nora | 109 |
| Naples | 95 |
| New Bedford | 74 |
| Nekoma | 66 |
| Niota | 5 |
| City | 2026 Pop. ↓ |
|---|---|
| Orland Park | 57,757 |
| Oak Lawn | 55,722 |
| Oak Park | 52,133 |
| Oswego | 40,795 |
| O'Fallon | 32,047 |
| Oak Forest | 26,534 |
| Ottawa | 18,752 |
| Olney | 8,301 |
| Oak Brook | 8,208 |
| Orland Hills | 6,582 |
| Olympia Fields | 4,534 |
| Oglesby | 3,593 |
| Oregon | 3,540 |
| Oakbrook Terrace | 2,720 |
| Oakwood Hills | 2,054 |
| Orion | 1,694 |
| Oblong | 1,339 |
| Okawville | 1,337 |
| Onarga | 1,271 |
| Oakwood | 1,251 |
| Oquawka | 1,046 |
| Odell | 972 |
| Odin | 886 |
| Oreana | 843 |
| Oak Run | 762 |
| Ogden | 729 |
| Orangeville | 725 |
| Oakland | 713 |
| Oneida | 673 |
| Oak Grove | 469 |
| Ohio | 452 |
| Olive Branch | 343 |
| Orient | 317 |
| Opdyke | 265 |
| Olmsted | 258 |
| Oakford | 224 |
| Owaneco | 201 |
| Omaha | 200 |
| Oakdale | 197 |
| Ophiem | 183 |
| Old Mill Creek | 158 |
| Oconee | 134 |
| Ohlman | 105 |
| Old Shawneetown | 101 |
| Olivet | 93 |
| Otterville | 81 |
| Old Ripley | 78 |
| Osco | 78 |
| Oxville | 33 |
| City | 2026 Pop. ↓ |
|---|---|
| Quincy | 38,391 |
| City | 2026 Pop. ↓ |
|---|---|
| Tinley Park | 54,370 |
| Troy | 11,988 |
| Taylorville | 10,145 |
| Tuscola | 4,664 |
| Tolono | 3,580 |
| Trenton | 2,642 |
| Tilton | 2,481 |
| Thornton | 2,262 |
| Tremont | 2,233 |
| The Galena Territory | 1,779 |
| Teutopolis | 1,727 |
| Thomson | 1,587 |
| Twin Grove | 1,552 |
| Toluca | 1,310 |
| Tower Lakes | 1,208 |
| Toulon | 1,154 |
| Toledo | 1,133 |
| Third Lake | 1,113 |
| Thomasboro | 1,019 |
| Timberlane | 900 |
| Tilden | 750 |
| Tonica | 730 |
| Taylor Springs | 719 |
| Tiskilwa | 700 |
| Tampico | 666 |
| Thayer | 608 |
| Tamaroa | 519 |
| Trout Valley | 505 |
| Thompsonville | 476 |
| Tower Hill | 469 |
| Trivoli | 448 |
| Tovey | 439 |
| Towanda | 422 |
| Tallula | 419 |
| Tamms | 350 |
| Table Grove | 325 |
| Taylor Ridge | 292 |
| Troy Grove | 221 |
| Thawville | 200 |
| Thebes | 170 |
| Trilla | 145 |
| Tennessee | 100 |
| Triumph | 92 |
| Topeka | 55 |
| City | 2026 Pop. ↓ |
|---|---|
| Urbana | 40,313 |
| University Park | 6,999 |
| Union | 760 |
| Ursa | 578 |
| Ullin | 450 |
| Unity | 188 |
| Union Hill | 51 |
| City | 2026 Pop. ↓ |
|---|---|
| Vernon Hills | 27,090 |
| Villa Park | 21,927 |
| Volo | 7,936 |
| Vandalia | 7,309 |
| Virden | 3,110 |
| Venetian Village | 2,676 |
| Villa Grove | 2,434 |
| Virginia | 1,451 |
| Venice | 1,433 |
| Vienna | 1,349 |
| Valmeyer | 1,207 |
| Viola | 831 |
| Vermont | 553 |
| Valier | 531 |
| Versailles | 458 |
| Varna | 370 |
| Virgil | 282 |
| Victoria | 255 |
| Vergennes | 237 |
| Verona | 208 |
| Vermilion | 190 |
| Venedy | 122 |
| Vernon | 99 |
| Valley City | 15 |
| City | 2026 Pop. ↓ |
|---|---|
| Xenia | 363 |
| City | 2026 Pop. ↓ |
|---|---|
| Yorkville | 28,096 |
| Yates City | 630 |
| Yale | 65 |