| City Name | County Name: | Population | Median Age |
| Abingdon | Knox | 3,115 | 39.2 |
| Addison | DuPage | 36,482 | 36.2 |
| Albers | Clinton | 1,135 | 35.1 |
| Albion | Edwards | 1,899 | 39.9 |
| Aledo | Mercer | 3,445 | 47.3 |
| Algonquin | McHenry | 30,897 | 40.9 |
| Alorton | St. Clair | 1,901 | 28.1 |
| Alsip | Cook | 18,709 | 36.9 |
| Altamont | Effingham | 2,339 | 39.8 |
| Alton | Madison | 78,905 | 38.8 |
| Amboy | Lee | 2,321 | 40.4 |
| Andalusia | Rock Island | 1,148 | 47 |
| Anna | Union | 5,610 | 43.2 |
| Antioch | Lake | 14,175 | 39.6 |
| Arcola | Douglas | 2,831 | 34.6 |
| Arlington Heights | Cook | 74,760 | 44.5 |
| Arthur | Douglas | 2,200 | 39.6 |
| Ashland | Cass | 1,191 | 44.2 |
| Assumption | Christian | 1,066 | 40.6 |
| Astoria | Fulton | 1,036 | 36.8 |
| Athens | Menard | 1,908 | 35.2 |
| Atlanta | Logan | 1,600 | 37.7 |
| Atwood | Douglas | 1,158 | 46.7 |
| Auburn | Sangamon | 4,623 | 36.9 |
| Aurora | Kane | 197,757 | 33.9 |
| Aviston | Clinton | 2,136 | 37.9 |
| Bannockburn | Lake | 1,506 | 22.8 |
| Barrington | Cook | 10,217 | 41.9 |
| Barrington Hills | Cook | 4,190 | 52.8 |
| Barry | Pike | 1,247 | 37.7 |
| Bartlett | Cook | 40,647 | 39.7 |
| Bartonville | Peoria | 6,113 | 42.4 |
| Batavia | Kane | 26,420 | 40.3 |
| Beach Park | Lake | 13,701 | 37.4 |
| Beardstown | Cass | 5,807 | 33.6 |
| Beckemeyer | Clinton | 1,008 | 38.7 |
| Beecher | Will | 4,427 | 41.9 |
| Belleville | St. Clair | 40,897 | 36.9 |
| Bellevue | Peoria | 2,049 | 39 |
| Bellwood | Cook | 18,672 | 36.5 |
| Belvidere | Boone | 25,143 | 35.8 |
| Bement | Piatt | 1,667 | 44.6 |
| Benld | Macoupin | 1,422 | 39.8 |
| Bensenville | DuPage | 18,044 | 36.1 |
| Benton | Franklin | 7,518 | 40 |
| Berkeley | Cook | 5,048 | 38.7 |
| Berwyn | Cook | 54,391 | 35.1 |
| Bethalto | Madison | 9,210 | 41.4 |
| Bethany | Moultrie | 1,239 | 50.2 |
| Big Rock | Kane | 1,129 | 46.9 |
| Bloomingdale | DuPage | 21,779 | 41.8 |
| Bloomington | McLean | 133,846 | 35 |
| Blue Island | Cook | 22,899 | 35.7 |
| Blue Mound | Macon | 1,072 | 36.1 |
| Bolingbrook | Will | 74,545 | 36.2 |
| Boulder Hill | Kendall | 10,262 | 33.6 |
| Bourbonnais | Kankakee | 19,462 | 34.4 |
| Bradley | Kankakee | 15,314 | 35.3 |
| Braidwood | Will | 22,670 | 39.9 |
| Breese | Clinton | 5,853 | 39.4 |
| Bridgeport | Lawrence | 1,705 | 38.9 |
| Bridgeview | Cook | 16,096 | 36.2 |
| Brighton | Macoupin | 2,131 | 39.1 |
| Broadview | Cook | 7,618 | 41.5 |
| Brookfield | Cook | 18,310 | 39.4 |
| Buffalo Grove | Cook | 40,494 | 41.7 |
| Bull Valley | McHenry | 1,084 | 52.3 |
| Bunker Hill | Macoupin | 1,687 | 42.4 |
| Burbank | Cook | 28,289 | 37.8 |
| Burnham | Cook | 4,088 | 37.5 |
| Burr Ridge | DuPage | 10,758 | 51.5 |
| Bushnell | McDonough | 2,866 | 41.5 |
| Byron | Ogle | 6,896 | 35.9 |
| Cahokia | St. Clair | 13,880 | 33.9 |
| Cairo | Alexander | 2,083 | 37.9 |
| Calumet City | Cook | 35,913 | 37.1 |
| Calumet Park | Cook | 7,602 | 42.8 |
| Cambria | Williamson | 1,463 | 33.3 |
| Cambridge | Henry | 2,078 | 43 |
| Camp Point | Adams | 1,093 | 37.9 |
| Campton Hills | Kane | 11,091 | 40.7 |
| Candlewick Lake | Boone | 4,734 | 32.8 |
| Canton | Fulton | 13,611 | 40.4 |
| Capron | Boone | 1,362 | 33.2 |
| Carbon Cliff | Rock Island | 1,957 | 31.6 |
| Carbondale | Jackson | 65,671 | 24.4 |
| Carlinville | Macoupin | 5,514 | 35.9 |
| Carlyle | Clinton | 4,175 | 42.4 |
| Carmi | White | 5,111 | 42.7 |
| Carol Stream | DuPage | 39,203 | 38.4 |
| Carpentersville | Kane | 37,254 | 30 |
| Carrier Mills | Saline | 1,552 | 38.4 |
| Carrollton | Greene | 2,398 | 39.3 |
| Carterville | Williamson | 5,847 | 37.3 |
| Carthage | Hancock | 2,457 | 44.7 |
| Cary | McHenry | 18,067 | 40.5 |
| Casey | Clark | 2,681 | 38 |
| Caseyville | St. Clair | 4,110 | 36.1 |
| Catlin | Vermilion | 1,926 | 43 |
| Central City | Marion | 1,115 | 35.2 |
| Centralia | Marion | 16,204 | 41.2 |
| Centreville | St. Clair | 4,897 | 39.3 |
| Cerro Gordo | Piatt | 1,347 | 34.6 |
| Champaign | Champaign | 159,443 | 27.4 |
| Channahon | Will | 13,239 | 37.8 |
| Channel Lake | Lake | 1,661 | 44 |
| Charleston | Coles | 20,117 | 26.5 |
| Chatham | Sangamon | 13,008 | 35.7 |
| Chatsworth | Livingston | 1,115 | 34.9 |
| Chenoa | McLean | 1,723 | 41.3 |
| Cherry Valley | Winnebago | 2,877 | 53.6 |
| Chester | Randolph | 8,213 | 41 |
| Chicago | Cook | 8,604,200 | 34.6 |
| Chicago Heights | Cook | 29,322 | 33.8 |
| Chicago Ridge | Cook | 13,928 | 34.8 |
| Chillicothe | Peoria | 6,012 | 40 |
| Chrisman | Edgar | 1,265 | 51.6 |
| Christopher | Franklin | 4,118 | 36.4 |
| Cicero | Cook | 80,796 | 30.5 |
| Clarendon Hills | DuPage | 8,752 | 38.3 |
| Clifton | Iroquois | 1,321 | 39.4 |
| Clinton | De Witt | 8,055 | 39.5 |
| Coal City | Grundy | 5,409 | 35.9 |
| Coal Valley | Rock Island | 3,723 | 48.4 |
| Cobden | Union | 1,064 | 39.3 |
| Colchester | McDonough | 1,288 | 41.3 |
| Colfax | McLean | 1,013 | 38.1 |
| Collinsville | Madison | 24,395 | 38.5 |
| Colona | Henry | 5,120 | 41.5 |
| Columbia | Monroe | 10,513 | 40 |
| Cortland | DeKalb | 4,408 | 30.7 |
| Country Club Hills | Cook | 16,482 | 40.3 |
| Countryside | Cook | 5,933 | 45 |
| Crainville | Williamson | 1,400 | 41.1 |
| Crest Hill | Will | 20,376 | 38.4 |
| Crestwood | Cook | 10,706 | 47.9 |
| Crete | Will | 8,023 | 46.4 |
| Creve Coeur | Tazewell | 5,169 | 36.2 |
| Crystal Lake | McHenry | 39,829 | 39.6 |
| Crystal Lawns | Will | 1,815 | 40.6 |
| Cuba | Fulton | 1,170 | 47.1 |
| Danvers | McLean | 1,100 | 38.6 |
| Danville | Vermilion | 47,059 | 36.4 |
| Darien | DuPage | 21,628 | 46.4 |
| Davis Junction | Ogle | 2,598 | 29.9 |
| De Pue | Bureau | 1,683 | 35.6 |
| De Soto | Jackson | 1,502 | 36.9 |
| Decatur | Macon | 87,236 | 40.2 |
| Deer Park | Lake | 4,225 | 44.5 |
| Deerfield | Lake | 18,646 | 43.9 |
| DeKalb | DeKalb | 66,959 | 25 |
| Delavan | Tazewell | 1,616 | 43.3 |
| Des Plaines | Cook | 58,899 | 43.3 |
| Diamond | Grundy | 2,506 | 35 |
| Divernon | Sangamon | 1,105 | 39.5 |
| Dixmoor | Cook | 3,563 | 32 |
| Dixon | Lee | 16,195 | 40.6 |
| Dolton | Cook | 22,348 | 36.6 |
| Downers Grove | DuPage | 49,057 | 42.7 |
| Downs | McLean | 2,523 | 34.7 |
| Du Quoin | Perry | 6,001 | 43.2 |
| Dunlap | Peoria | 1,448 | 39.6 |
| Dupo | St. Clair | 3,877 | 40.1 |
| Durand | Winnebago | 1,394 | 40.1 |
| Dwight | Livingston | 5,005 | 43.5 |
| Earlville | LaSalle | 1,587 | 41.5 |
| East Alton | Madison | 5,954 | 39.3 |
| East Dubuque | Jo Daviess | 1,569 | 45.7 |
| East Dundee | Kane | 3,216 | 52 |
| East Hazel Crest | Cook | 1,497 | 45 |
| East Moline | Rock Island | 20,645 | 38.8 |
| East Peoria | Tazewell | 22,546 | 42.2 |
| East St. Louis | St. Clair | 26,047 | 37.4 |
| Edinburg | Christian | 1,012 | 41.3 |
| Edwardsville | Madison | 25,233 | 28.3 |
| Effingham | Effingham | 14,005 | 36.7 |
| El Paso | Woodford | 2,730 | 37.4 |
| Elburn | Kane | 5,997 | 36.6 |
| Eldorado | Saline | 4,336 | 38.4 |
| Elgin | Kane | 110,849 | 35 |
| Elk Grove Village | Cook | 32,400 | 43.5 |
| Elmhurst | DuPage | 46,746 | 39.9 |
| Elmwood | Peoria | 2,550 | 40.7 |
| Elmwood Park | Cook | 24,098 | 39.9 |
| Elwood | Will | 2,226 | 40.7 |
| Energy | Williamson | 1,109 | 50.5 |
| Erie | Whiteside | 1,499 | 41.4 |
| Eureka | Woodford | 5,560 | 34.5 |
| Evanston | Cook | 73,473 | 36.1 |
| Evergreen Park | Cook | 19,147 | 39.9 |
| Fairbury | Livingston | 3,647 | 41.2 |
| Fairfield | Wayne | 4,936 | 43.1 |
| Fairmont | Will | 2,699 | 31.3 |
| Fairmont City | St. Clair | 2,453 | 30.1 |
| Fairview Heights | St. Clair | 16,303 | 40 |
| Farmer City | De Witt | 1,936 | 44.8 |
| Farmington | Fulton | 2,223 | 36.6 |
| Fisher | Champaign | 1,937 | 34.1 |
| Flanagan | Livingston | 1,064 | 48.2 |
| Flora | Clay | 4,852 | 41.9 |
| Flossmoor | Cook | 9,155 | 44 |
| Ford Heights | Cook | 2,682 | 31.9 |
| Forest Lake | Lake | 1,327 | 42.5 |
| Forest Park | Cook | 13,704 | 39.5 |
| Forrest | Livingston | 1,135 | 38.8 |
| Forreston | Ogle | 1,341 | 35.8 |
| Forsyth | Macon | 3,479 | 41.6 |
| Fox Lake | Lake | 10,451 | 45.2 |
| Fox Lake Hills | Lake | 2,204 | 45.5 |
| Fox River Grove | McHenry | 4,573 | 37.9 |
| Frankfort | Will | 19,373 | 42.1 |
| Frankfort Square | Will | 8,768 | 39.8 |
| Franklin Park | Cook | 17,627 | 39.1 |
| Freeburg | St. Clair | 4,242 | 43.3 |
| Freeport | Stephenson | 24,092 | 41.6 |
| Fulton | Whiteside | 3,315 | 43 |
| Gages Lake | Lake | 10,161 | 41.6 |
| Galena | Jo Daviess | 3,158 | 52.6 |
| Galesburg | Knox | 33,767 | 40.3 |
| Galva | Henry | 2,478 | 47.5 |
| Gardner | Grundy | 1,381 | 44.6 |
| Geneseo | Henry | 6,495 | 43 |
| Geneva | Kane | 21,809 | 43.2 |
| Genoa | DeKalb | 6,467 | 36.6 |
| Georgetown | Vermilion | 3,185 | 44.6 |
| Germantown | Clinton | 1,274 | 40 |
| Germantown Hills | Woodford | 3,423 | 42.2 |
| Gibson City | Ford | 3,429 | 40.5 |
| Gifford | Champaign | 1,048 | 47.9 |
| Gilberts | Kane | 8,076 | 31.8 |
| Gillespie | Macoupin | 5,002 | 41.8 |
| Gilman | Iroquois | 2,740 | 41.5 |
| Girard | Macoupin | 2,000 | 40.4 |
| Glen Carbon | Madison | 12,850 | 39 |
| Glen Ellyn | DuPage | 27,714 | 40.7 |
| Glencoe | Cook | 8,826 | 45.6 |
| Glendale Heights | DuPage | 33,617 | 33.6 |
| Glenview | Cook | 47,308 | 46.5 |
| Glenwood | Cook | 8,715 | 38.3 |
| Godfrey | Madison | 17,400 | 48.7 |
| Goreville | Johnson | 1,060 | 44.6 |
| Grandview | Sangamon | 1,383 | 38.7 |
| Grandwood Park | Lake | 5,170 | 40 |
| Granite City | Madison | 28,158 | 41.8 |
| Grant Park | Kankakee | 1,249 | 43.8 |
| Granville | Putnam | 1,308 | 44.6 |
| Grayslake | Lake | 20,725 | 36.7 |
| Grayville | Edwards | 1,565 | 42.1 |
| Green Oaks | Lake | 3,897 | 47.6 |
| Greenup | Cumberland | 1,490 | 38.2 |
| Greenville | Bond | 6,417 | 39 |
| Gridley | McLean | 1,398 | 36.5 |
| Griggsville | Pike | 1,150 | 40 |
| Gurnee | Lake | 30,378 | 40.3 |
| Hainesville | Lake | 3,557 | 34 |
| Hamilton | Hancock | 2,715 | 44.7 |
| Hampshire | Kane | 6,251 | 36.5 |
| Hampton | Rock Island | 1,742 | 40.5 |
| Hanna City | Peoria | 1,192 | 46.5 |
| Hanover Park | DuPage | 37,426 | 33.8 |
| Harrisburg | Saline | 8,933 | 39 |
| Harristown | Macon | 1,292 | 46 |
| Hartford | Madison | 1,341 | 33.8 |
| Harvard | McHenry | 9,533 | 30.9 |
| Harvey | Cook | 24,408 | 35.2 |
| Harwood Heights | Cook | 8,333 | 43.3 |
| Havana | Mason | 2,987 | 43.1 |
| Hawthorn Woods | Lake | 8,666 | 43.3 |
| Hazel Crest | Cook | 13,565 | 38.6 |
| Hebron | McHenry | 1,183 | 32.2 |
| Henry | Marshall | 2,209 | 40.8 |
| Heritage Lake | Tazewell | 1,690 | 40.6 |
| Herrin | Williamson | 12,687 | 39.5 |
| Herscher | Kankakee | 1,504 | 43 |
| Heyworth | McLean | 3,043 | 38.3 |
| Hickory Hills | Cook | 13,710 | 38.5 |
| Highland | Madison | 11,425 | 38.5 |
| Highland Park | Lake | 29,515 | 47.1 |
| Highwood | Lake | 5,224 | 35.3 |
| Hillcrest | Ogle | 1,225 | 35.7 |
| Hillsboro | Montgomery | 6,984 | 37.7 |
| Hillside | Cook | 7,933 | 37.7 |
| Hinckley | DeKalb | 2,050 | 39.4 |
| Hinsdale | DuPage | 17,637 | 42.1 |
| Hodgkins | Cook | 1,971 | 42 |
| Hoffman Estates | Cook | 50,932 | 38.6 |
| Holiday Shores | Madison | 2,930 | 40.6 |
| Homer | Champaign | 1,159 | 36.4 |
| Homer Glen | Will | 24,472 | 43.9 |
| Hometown | Cook | 4,177 | 36.7 |
| Homewood | Cook | 18,703 | 40.5 |
| Hoopeston | Vermilion | 5,009 | 45.7 |
| Hudson | McLean | 1,813 | 35.7 |
| Huntley | McHenry | 27,228 | 49 |
| Ina | Jefferson | 2,279 | 40.1 |
| Indian Head Park | Cook | 3,719 | 53.7 |
| Ingalls Park | Will | 3,171 | 36.5 |
| Inverness | Cook | 7,376 | 51.9 |
| Island Lake | Lake | 8,020 | 42.6 |
| Itasca | DuPage | 9,805 | 45.4 |
| Jacksonville | Morgan | 21,685 | 37.3 |
| Jerome | Sangamon | 1,588 | 38.9 |
| Jerseyville | Jersey | 8,708 | 39.2 |
| Johnsburg | McHenry | 6,368 | 41.4 |
| Johnston City | Williamson | 3,464 | 42.6 |
| Joliet | Will | 147,344 | 33.8 |
| Jonesboro | Union | 1,700 | 39.6 |
| Justice | Cook | 12,608 | 32.8 |
| Kankakee | Kankakee | 77,429 | 35.4 |
| Kenilworth | Cook | 2,475 | 42.6 |
| Kewanee | Henry | 12,339 | 37.8 |
| Kildeer | Lake | 4,012 | 44.5 |
| Kincaid | Christian | 1,372 | 41.2 |
| Kingston | DeKalb | 1,169 | 37.1 |
| Kirkland | DeKalb | 1,729 | 33.3 |
| Knollwood | Lake | 1,665 | 38.3 |
| Knoxville | Knox | 2,726 | 40.1 |
| La Grange | Cook | 15,322 | 41.7 |
| La Grange Park | Cook | 13,178 | 40.6 |
| La Harpe | Hancock | 1,143 | 43.5 |
| Lacon | Marshall | 1,739 | 50.2 |
| Ladd | Bureau | 1,195 | 44 |
| Lake Barrington | Lake | 4,868 | 56.1 |
| Lake Bluff | Lake | 5,562 | 45 |
| Lake Camelot | Peoria | 1,755 | 37 |
| Lake Catherine | Lake | 1,454 | 47.6 |
| Lake Forest | Lake | 19,446 | 47.8 |
| Lake Holiday | LaSalle | 4,512 | 38.9 |
| Lake in the Hills | McHenry | 28,634 | 34.9 |
| Lake of the Woods | Champaign | 2,404 | 34.2 |
| Lake Summerset | Winnebago | 2,057 | 49 |
| Lake Villa | Lake | 8,573 | 38.1 |
| Lake Zurich | Lake | 19,877 | 38.8 |
| Lakemoor | McHenry | 5,967 | 35.2 |
| Lakewood | McHenry | 4,001 | 40.6 |
| Lakewood Shores | Will | 1,459 | 44.7 |
| Lanark | Carroll | 1,333 | 41.8 |
| Lansing | Cook | 27,402 | 40.4 |
| LaSalle | LaSalle | 8,986 | 36.9 |
| Lawrenceville | Lawrence | 7,150 | 42.8 |
| Le Roy | McLean | 3,493 | 43.5 |
| Lebanon | St. Clair | 4,238 | 37.5 |
| Leland Grove | Sangamon | 1,464 | 55.7 |
| Lemont | Cook | 17,291 | 45.7 |
| Lena | Stephenson | 2,719 | 49.5 |
| Lewistown | Fulton | 2,146 | 41.6 |
| Lexington | McLean | 2,026 | 42.7 |
| Libertyville | Lake | 20,205 | 44.2 |
| Lily Lake | Kane | 1,023 | 43.8 |
| Limestone | Kankakee | 1,522 | 41.2 |
| Lincoln | Logan | 16,993 | 38.7 |
| Lincolnshire | Lake | 7,893 | 53.1 |
| Lincolnwood | Cook | 12,245 | 46.6 |
| Lindenhurst | Lake | 14,216 | 39.5 |
| Lisle | DuPage | 23,270 | 36.9 |
| Litchfield | Montgomery | 6,731 | 44.3 |
| Lockport | Will | 25,615 | 36.2 |
| Lombard | DuPage | 44,303 | 37.7 |
| Long Creek | Macon | 1,273 | 47.9 |
| Long Grove | Lake | 7,905 | 46.6 |
| Long Lake | Lake | 3,557 | 38.1 |
| Louisville | Clay | 1,095 | 37.9 |
| Loves Park | Winnebago | 23,371 | 38.2 |
| Lovington | Moultrie | 1,026 | 36.7 |
| Lynwood | Cook | 9,194 | 38.5 |
| Lyons | Cook | 10,372 | 34.5 |
| Machesney Park | Winnebago | 22,677 | 40.8 |
| Mackinaw | Tazewell | 3,335 | 38.5 |
| Macomb | McDonough | 18,006 | 25.9 |
| Macon | Macon | 1,112 | 44.5 |
| Madison | Madison | 3,758 | 39.3 |
| Mahomet | Champaign | 13,094 | 37.7 |
| Malta | DeKalb | 1,158 | 39.3 |
| Manhattan | Will | 8,240 | 30.9 |
| Manito | Mason | 1,486 | 39.3 |
| Manteno | Kankakee | 9,002 | 43.4 |
| Maple Park | Kane | 1,365 | 38.5 |
| Marengo | McHenry | 7,517 | 36.7 |
| Marion | Williamson | 17,520 | 39.3 |
| Marissa | St. Clair | 1,806 | 49.6 |
| Markham | Cook | 12,314 | 37.5 |
| Maroa | Macon | 1,711 | 41.1 |
| Marquette Heights | Tazewell | 2,645 | 37.9 |
| Marseilles | LaSalle | 4,834 | 40.9 |
| Marshall | Clark | 3,811 | 41.7 |
| Martinsville | Clark | 1,088 | 33.1 |
| Maryville | Madison | 7,952 | 45.4 |
| Mascoutah | St. Clair | 7,994 | 36.1 |
| Mason City | Mason | 2,119 | 43.5 |
| Matteson | Cook | 19,448 | 43.7 |
| Mattoon | Coles | 18,016 | 40.5 |
| Maywood | Cook | 23,158 | 37.9 |
| McCullom Lake | McHenry | 1,008 | 31.8 |
| McHenry | McHenry | 27,061 | 39.8 |
| McLeansboro | Hamilton | 2,746 | 43.1 |
| Melrose Park | Cook | 24,703 | 33.1 |
| Mendota | LaSalle | 6,994 | 38.4 |
| Merrionette Park | Cook | 1,858 | 37.7 |
| Metamora | Woodford | 3,713 | 38.8 |
| Metropolis | Massac | 6,008 | 43.7 |
| Midlothian | Cook | 14,346 | 38.8 |
| Milan | Rock Island | 4,991 | 43.6 |
| Milford | Iroquois | 1,171 | 46.2 |
| Millstadt | St. Clair | 3,857 | 37.7 |
| Minier | Tazewell | 1,190 | 45.1 |
| Minonk | Woodford | 1,974 | 41.4 |
| Minooka | Grundy | 11,397 | 33.6 |
| Mitchell | Madison | 1,247 | 46.9 |
| Mokena | Will | 20,159 | 40.4 |
| Moline | Rock Island | 41,356 | 39.9 |
| Momence | Kankakee | 3,530 | 35.3 |
| Monee | Will | 5,061 | 43.2 |
| Monmouth | Warren | 9,084 | 35.8 |
| Montgomery | Kane | 19,638 | 31.5 |
| Monticello | Piatt | 5,534 | 41.1 |
| Morris | Grundy | 17,296 | 38.3 |
| Morrison | Whiteside | 3,988 | 41.9 |
| Morton | Tazewell | 16,277 | 42.1 |
| Morton Grove | Cook | 22,796 | 47.8 |
| Mount Carmel | Wabash | 7,016 | 45.9 |
| Mount Carroll | Carroll | 1,571 | 45.9 |
| Mount Morris | Ogle | 3,222 | 44.7 |
| Mount Olive | Macoupin | 1,939 | 40.9 |
| Mount Prospect | Cook | 53,719 | 40.4 |
| Mount Pulaski | Logan | 1,464 | 47.3 |
| Mount Sterling | Brown | 3,853 | 34.2 |
| Mount Vernon | Jefferson | 15,427 | 38.6 |
| Mount Zion | Macon | 5,795 | 39.1 |
| Moweaqua | Shelby | 1,714 | 46.6 |
| Mundelein | Lake | 31,051 | 37.2 |
| Murphysboro | Jackson | 8,976 | 36.5 |
| Naperville | DuPage | 148,449 | 39.1 |
| Nashville | Washington | 3,011 | 42.6 |
| Nauvoo | Hancock | 1,063 | 45.1 |
| Neoga | Cumberland | 1,602 | 38.9 |
| New Athens | St. Clair | 1,884 | 36.4 |
| New Baden | Clinton | 3,314 | 39.2 |
| New Berlin | Sangamon | 1,333 | 36.7 |
| New Lenox | Will | 26,926 | 36.9 |
| Newark | Kendall | 1,028 | 36.6 |
| Newton | Jasper | 2,936 | 44.3 |
| Niles | Cook | 28,938 | 48.4 |
| Nokomis | Montgomery | 3,139 | 38.2 |
| Normal | McLean | 54,469 | 24.6 |
| Norridge | Cook | 14,152 | 46.8 |
| Norris City | White | 1,151 | 37.7 |
| North Aurora | Kane | 18,057 | 41.1 |
| North Barrington | Lake | 2,952 | 50.4 |
| North Chicago | Lake | 29,615 | 24.1 |
| North Pekin | Tazewell | 1,545 | 39.7 |
| North Riverside | Cook | 6,429 | 41.6 |
| North Utica | LaSalle | 1,336 | 45.6 |
| Northbrook | Cook | 32,958 | 50.2 |
| Northfield | Cook | 5,386 | 48.8 |
| Northlake | Cook | 12,161 | 37 |
| O'Fallon | St. Clair | 29,583 | 36.7 |
| Oak Brook | DuPage | 8,016 | 56.1 |
| Oak Forest | Cook | 27,173 | 41.8 |
| Oak Lawn | Cook | 55,022 | 40.8 |
| Oak Park | Cook | 52,381 | 39.8 |
| Oakbrook Terrace | DuPage | 2,098 | 37 |
| Oakwood | Vermilion | 1,485 | 33.8 |
| Oakwood Hills | McHenry | 2,028 | 38.3 |
| Oblong | Crawford | 1,371 | 39.3 |
| Odin | Marion | 1,009 | 39.4 |
| Oglesby | LaSalle | 3,559 | 39.4 |
| Okawville | Washington | 1,360 | 35.9 |
| Olney | Richland | 8,732 | 41.2 |
| Olympia Fields | Cook | 4,790 | 48.4 |
| Onarga | Iroquois | 1,264 | 35.7 |
| Oquawka | Henderson | 1,252 | 45.4 |
| Oregon | Ogle | 3,555 | 46.2 |
| Orion | Henry | 1,798 | 38.2 |
| Orland Hills | Cook | 7,023 | 36.1 |
| Orland Park | Cook | 57,857 | 46 |
| Oswego | Kendall | 36,252 | 36.6 |
| Ottawa | LaSalle | 19,839 | 38.7 |
| Palatine | Cook | 67,482 | 38.2 |
| Palestine | Crawford | 1,273 | 49.9 |
| Palos Heights | Cook | 12,520 | 52.1 |
| Palos Hills | Cook | 17,060 | 41.8 |
| Palos Park | Cook | 4,736 | 53.6 |
| Pana | Christian | 5,463 | 40.9 |
| Paris | Edgar | 8,394 | 42.8 |
| Park City | Lake | 7,438 | 29 |
| Park Forest | Cook | 21,210 | 39.3 |
| Park Ridge | Cook | 36,950 | 44.9 |
| Pawnee | Sangamon | 2,764 | 37.6 |
| Paxton | Ford | 4,534 | 40.5 |
| Pecatonica | Winnebago | 2,078 | 37.5 |
| Pekin | Tazewell | 32,045 | 39.7 |
| Peoria | Peoria | 256,286 | 35.2 |
| Peoria Heights | Peoria | 5,779 | 37.9 |
| Peotone | Will | 4,135 | 37.5 |
| Peru | LaSalle | 30,287 | 46.1 |
| Petersburg | Menard | 3,024 | 40.5 |
| Philo | Champaign | 1,400 | 39.7 |
| Phoenix | Cook | 1,908 | 35.7 |
| Pinckneyville | Perry | 5,393 | 36.7 |
| Pingree Grove | Kane | 9,874 | 37.1 |
| Pistakee Highlands | McHenry | 3,217 | 43.1 |
| Pittsfield | Pike | 4,254 | 40.3 |
| Plainfield | Will | 44,308 | 35.8 |
| Plano | Kendall | 11,665 | 32.8 |
| Polo | Ogle | 2,171 | 39.9 |
| Pontiac | Livingston | 11,622 | 38.7 |
| Pontoon Beach | Madison | 5,641 | 35.1 |
| Poplar Grove | Boone | 5,104 | 34.7 |
| Port Barrington | McHenry | 1,488 | 38.8 |
| Port Byron | Rock Island | 1,607 | 39.3 |
| Posen | Cook | 5,865 | 31.1 |
| Prairie Grove | McHenry | 1,931 | 42.7 |
| Prestbury | Kane | 1,584 | 61.1 |
| Preston Heights | Will | 2,651 | 34.3 |
| Princeton | Bureau | 7,840 | 46.6 |
| Princeville | Peoria | 1,672 | 40.9 |
| Prophetstown | Whiteside | 1,939 | 47.4 |
| Prospect Heights | Cook | 15,887 | 38.2 |
| Quincy | Adams | 44,466 | 40.7 |
| Ramsey | Fayette | 1,011 | 37.3 |
| Rantoul | Champaign | 13,584 | 30.5 |
| Red Bud | Randolph | 3,480 | 43.1 |
| Richmond | McHenry | 1,904 | 39.3 |
| Richton Park | Cook | 13,292 | 41.4 |
| River Forest | Cook | 10,816 | 41.7 |
| River Grove | Cook | 9,883 | 37.5 |
| Riverdale | Cook | 13,077 | 33.6 |
| Riverside | Cook | 8,563 | 42.5 |
| Riverton | Sangamon | 3,434 | 37 |
| Riverwoods | Lake | 3,562 | 45.8 |
| Roanoke | Woodford | 1,990 | 44.2 |
| Robbins | Cook | 5,438 | 35.1 |
| Robinson | Crawford | 7,513 | 38.1 |
| Rochelle | Ogle | 10,723 | 36.1 |
| Rochester | Sangamon | 3,709 | 38.3 |
| Rock Falls | Whiteside | 8,740 | 40.5 |
| Rock Island | Rock Island | 37,176 | 36 |
| Rockdale | Will | 1,910 | 36.2 |
| Rockford | Winnebago | 282,762 | 37.2 |
| Rockton | Winnebago | 7,441 | 41 |
| Rolling Meadows | Cook | 23,532 | 38.1 |
| Rome | Peoria | 1,525 | 47.8 |
| Romeoville | Will | 39,746 | 34.6 |
| Roodhouse | Greene | 1,677 | 35.5 |
| Roscoe | Winnebago | 10,510 | 36.5 |
| Roselle | DuPage | 22,463 | 40.4 |
| Rosemont | Cook | 4,066 | 37.1 |
| Rosewood Heights | Madison | 4,063 | 44 |
| Rosiclare | Hardin | 1,014 | 45.7 |
| Rossville | Vermilion | 1,217 | 36.9 |
| Round Lake | Lake | 18,100 | 34.6 |
| Round Lake Beach | Lake | 279,381 | 33 |
| Round Lake Heights | Lake | 2,645 | 30.9 |
| Round Lake Park | Lake | 7,747 | 42.4 |
| Roxana | Madison | 1,434 | 43.2 |
| Royalton | Franklin | 1,117 | 50.4 |
| Rushville | Schuyler | 2,851 | 41.3 |
| Salem | Marion | 7,730 | 36.6 |
| Sandoval | Marion | 1,214 | 36 |
| Sandwich | DeKalb | 7,418 | 37.4 |
| Sauk Village | Cook | 10,246 | 29.1 |
| Savanna | Carroll | 3,070 | 49.7 |
| Savoy | Champaign | 8,401 | 34.2 |
| Schaumburg | Cook | 72,887 | 38.5 |
| Schiller Park | Cook | 11,403 | 41 |
| Scott AFB | St. Clair | 2,893 | 22.6 |
| Seneca | LaSalle | 2,251 | 32.6 |
| Sesser | Franklin | 1,860 | 44.9 |
| Shawneetown | Gallatin | 1,077 | 39.8 |
| Shelbyville | Shelby | 4,757 | 45.7 |
| Sheridan | LaSalle | 2,520 | 34 |
| Sherman | Sangamon | 4,679 | 44.7 |
| Shiloh | St. Clair | 13,586 | 40.1 |
| Shorewood | Will | 17,509 | 42 |
| Sidney | Champaign | 1,191 | 36.5 |
| Silvis | Rock Island | 7,475 | 38.4 |
| Skokie | Cook | 62,700 | 43.7 |
| Sleepy Hollow | Kane | 3,244 | 49.4 |
| Smithton | St. Clair | 3,844 | 43.2 |
| Somonauk | DeKalb | 1,871 | 38.1 |
| South Barrington | Cook | 4,996 | 48.3 |
| South Beloit | Winnebago | 7,624 | 35 |
| South Chicago Heights | Cook | 4,003 | 34.8 |
| South Elgin | Kane | 24,755 | 37.5 |
| South Holland | Cook | 21,296 | 39.1 |
| South Jacksonville | Morgan | 3,102 | 47.1 |
| South Pekin | Tazewell | 1,093 | 35.9 |
| South Roxana | Madison | 1,991 | 31.3 |
| Southern View | Sangamon | 1,570 | 45.1 |
| Sparta | Randolph | 4,273 | 40.6 |
| Spring Grove | McHenry | 5,706 | 44.2 |
| Spring Valley | Bureau | 5,125 | 42.7 |
| Springfield | Sangamon | 158,509 | 39.4 |
| St. Anne | Kankakee | 1,193 | 34.6 |
| St. Charles | Kane | 32,887 | 42.8 |
| St. Elmo | Fayette | 1,403 | 40.8 |
| St. Jacob | Madison | 1,319 | 33.4 |
| St. Joseph | Champaign | 4,911 | 36.6 |
| Staunton | Macoupin | 5,913 | 43 |
| Steeleville | Randolph | 3,206 | 38.8 |
| Steger | Cook | 9,221 | 40.7 |
| Sterling | Whiteside | 27,127 | 41 |
| Stickney | Cook | 6,566 | 37 |
| Stillman Valley | Ogle | 1,053 | 33 |
| Stockton | Jo Daviess | 1,712 | 45.2 |
| Stone Park | Cook | 4,826 | 32.8 |
| Streamwood | Cook | 39,228 | 38.7 |
| Streator | LaSalle | 17,021 | 42.6 |
| Sugar Grove | Kane | 9,888 | 43.1 |
| Sullivan | Moultrie | 4,560 | 37.6 |
| Summit | Cook | 11,116 | 32 |
| Sumner | Lawrence | 2,980 | 33.8 |
| Swansea | St. Clair | 13,350 | 43.9 |
| Sycamore | DeKalb | 18,322 | 36.6 |
| Taylorville | Christian | 12,659 | 44.2 |
| Teutopolis | Effingham | 1,642 | 36.5 |
| The Galena Territory | Jo Daviess | 1,334 | 66.8 |
| Third Lake | Lake | 1,146 | 51.3 |
| Thomasboro | Champaign | 1,084 | 45.3 |
| Thornton | Cook | 2,401 | 43.5 |
| Tilton | Vermilion | 2,686 | 46.9 |
| Tinley Park | Cook | 55,773 | 40.1 |
| Toledo | Cumberland | 1,190 | 39.8 |
| Tolono | Champaign | 3,392 | 36.4 |
| Toluca | Marshall | 1,269 | 51.5 |
| Toulon | Stark | 1,161 | 47.8 |
| Tower Lakes | Lake | 1,226 | 46.2 |
| Tremont | Tazewell | 2,120 | 44.6 |
| Trenton | Clinton | 2,609 | 42.6 |
| Troy | Madison | 10,375 | 37.6 |
| Tuscola | Douglas | 4,665 | 39.2 |
| Twin Grove | McLean | 1,401 | 48.3 |
| University Park | Cook | 6,887 | 31.3 |
| Urbana | Champaign | 42,214 | 25.1 |
| Valmeyer | Monroe | 1,248 | 38.6 |
| Vandalia | Fayette | 6,936 | 38.3 |
| Venetian Village | Lake | 2,934 | 36.9 |
| Venice | Madison | 1,858 | 38.4 |
| Vernon Hills | Lake | 26,521 | 39.1 |
| Vienna | Johnson | 1,440 | 45.8 |
| Villa Grove | Douglas | 2,418 | 42.1 |
| Villa Park | DuPage | 21,483 | 37.7 |
| Virden | Macoupin | 4,148 | 41.3 |
| Virginia | Cass | 1,435 | 42.2 |
| Volo | Lake | 5,813 | 33.4 |
| Wadsworth | Lake | 3,651 | 51.3 |
| Walnut | Bureau | 1,306 | 40.8 |
| Wamac | Clinton | 1,123 | 34 |
| Warren | Jo Daviess | 1,304 | 49.2 |
| Warrensburg | Macon | 1,126 | 33.9 |
| Warrenville | DuPage | 13,174 | 37.9 |
| Warsaw | Hancock | 1,480 | 41.4 |
| Washburn | Woodford | 1,082 | 33 |
| Washington | Tazewell | 16,516 | 38.8 |
| Washington Park | St. Clair | 3,865 | 40.3 |
| Waterloo | Monroe | 10,578 | 40.4 |
| Waterman | DeKalb | 1,500 | 38 |
| Watseka | Iroquois | 4,767 | 44.9 |
| Wauconda | Lake | 13,504 | 38.4 |
| Waukegan | Lake | 86,075 | 32.3 |
| Waverly | Morgan | 1,194 | 38.9 |
| Wayne | DuPage | 2,429 | 51.1 |
| West Chicago | DuPage | 26,816 | 34 |
| West Dundee | Kane | 8,113 | 42.4 |
| West Frankfort | Franklin | 8,561 | 43.4 |
| West Peoria | Peoria | 4,455 | 40.9 |
| Westchester | Cook | 16,117 | 46 |
| Western Springs | Cook | 13,359 | 41.4 |
| Westmont | DuPage | 24,443 | 39.6 |
| Westville | Vermilion | 2,945 | 36.3 |
| Wheaton | DuPage | 52,745 | 37.3 |
| Wheeling | Cook | 38,646 | 37.5 |
| White Hall | Greene | 3,741 | 47.8 |
| Williamsville | Sangamon | 1,485 | 38.7 |
| Willow Springs | Cook | 5,621 | 48.5 |
| Willowbrook | DuPage | 8,579 | 48.9 |
| Wilmette | Cook | 27,089 | 45.5 |
| Wilmington | Will | 5,653 | 43.2 |
| Winchester | Scott | 1,467 | 39.5 |
| Windsor | Shelby | 1,151 | 37 |
| Winfield | DuPage | 9,636 | 49.7 |
| Winnebago | Winnebago | 2,991 | 42 |
| Winnetka | Cook | 12,316 | 40.9 |
| Winthrop Harbor | Lake | 6,618 | 45.9 |
| Wonder Lake | McHenry | 4,370 | 39.2 |
| Wood Dale | DuPage | 13,607 | 41.7 |
| Wood River | Madison | 10,051 | 35 |
| Woodridge | DuPage | 33,432 | 38.1 |
| Woodstock | McHenry | 25,786 | 36.3 |
| Worden | Madison | 1,041 | 34.8 |
| Worth | Cook | 10,466 | 41.8 |
| Wyoming | Stark | 1,273 | 43.4 |
| Yorkville | Kendall | 20,613 | 33.3 |
| Zeigler | Franklin | 1,712 | 37.1 |
| Zion | Lake | 23,487 | 32.1 |