Illinois'daki şehirler listesi
En kalabalık yerler

Aşağıda, Illinois Eyaleti’ndeki en kalabalık tüzel yerleşim birimlerinin bir listesi bulunmaktadır. Amerika Birleşik Devletleri Nüfus Sayım Bürosu’nun tanımına göre tüzel yerleşim birimi; şehir (city), kasaba (town), köy (village), bucak (borough) ve belediye (municipality) gibi çeşitli idari yapıları kapsar.
Bu liste, yalnızca her belediyenin resmi sınırları içindeki nüfusu dikkate alır. Büyük kent bölgelerindeki diğer belediyeleri veya tüzel kişiliği olmayan banliyöleri içermez. Metropol alanlarının toplam nüfusu hesaba katıldığında farklı bir sıralama ortaya çıkabilir.
Nüfus verileri 2010 Nüfus Sayımına dayanmaktadır.
County seat

 State capital and county seat
| Rank | Name | Population | County |
| --- | --- | --- | --- |
| 1 | Chicago  | 2,695,598 | Cook |
| 2 | Aurora | 197,899 | Kane |
| 3 | Rockford  | 152,871 | Winnebago |
| 4 | Joliet  | 147,433 | Will |
| 5 | Naperville | 141,853 | DuPage |
| 6 | Springfield  | 116,250 | Sangamon |
| 7 | Peoria  | 115,007 | Peoria |
| 8 | Elgin | 108,188 | Kane |
| 9 | Waukegan  | 89,078 | Lake |
| 10 | Cicero | 83,891 | Cook |
| 11 | Champaign | 81,055 | Champaign |
| 12 | Bloomington  | 76,610 | McLean |
| 13 | Decatur  | 76,122 | Macon |
| 14 | Arlington Heights | 75,101 | Cook |
| 15 | Evanston | 74,486 | Cook |
| 16 | Schaumburg | 74,227 | Cook |
| 17 | Bolingbrook | 73,366 | Will |
| 18 | Palatine | 68,557 | Cook |
| 19 | Skokie | 64,784 | Cook |
| 20 | Des Plaines | 58,364 | Cook |
| 21 | Orland Park | 56,767 | Cook |
| 22 | Tinley Park | 56,703 | Cook |
| 23 | Oak Lawn | 56,690 | Cook |
| 24 | Berwyn | 56,657 | Cook |
| 25 | Mount Prospect | 54,167 | Cook |
| 26 | Wheaton  | 52,894 | DuPage |
| 27 | Normal | 52,497 | McLean |
| 28 | Hoffman Estates | 51,895 | Cook |
| 29 | Oak Park | 51,878 | Cook |
| 30 | Downers Grove | 47,833 | DuPage |
| 31 | Glenview | 44,692 | Cook |
| 32 | Belleville  | 44,478 | St. Clair |
| 33 | Elmhurst | 44,121 | DuPage |
| 34 | DeKalb | 43,862 | DeKalb |
| 35 | Moline | 43,483 | Rock Island |
| 36 | Lombard | 43,165 | DuPage |
| 37 | Buffalo Grove | 41,496 | Lake |
| 38 | Urbana  | 41,250 | Champaign |
| 39 | Bartlett | 41,208 | Cook |
| 40 | Crystal Lake | 40,743 | McHenry |
| 41 | Quincy  | 40,633 | Adams |
| 42 | Streamwood | 39,858 | Cook |
| 43 | Carol Stream | 39,711 | DuPage |
| 44 | Romeoville | 39,680 | Will |
| 45 | Plainfield | 39,581 | Will |
| 46 | Rock Island  | 39,018 | Rock Island |
| 47 | Hanover Park | 37,973 | Cook |
| 48 | Carpentersville | 37,691 | Kane |
| 49 | Wheeling | 37,648 | Cook |
| 50 | Park Ridge | 37,480 | Cook |
| 51 | Calumet City | 37,042 | Cook |
| 52 | Addison | 36,942 | DuPage |
| 53 | Glendale Heights | 34,208 | DuPage |
| 54 | Pekin  | 34,094 | Tazewell |
| 55 | Northbrook | 33,170 | Cook |
| 56 | Elk Grove Village | 33,127 | Cook |
| 57 | Danville  | 33,027 | Vermilion |
| 58 | St. Charles | 32,974 | Kane |
| 59 | Woodridge | 32,971 | DuPage |
| 60 | North Chicago | 32,574 | Lake |
| 61 | Galesburg  | 32,195 | Knox |
| 62 | Gurnee | 31,295 | Lake |
| 63 | Mundelein | 31,064 | Lake |
| 64 | Oswego | 30,355 | Kendall |
| 65 | Chicago Heights | 30,276 | Cook |
| 66 | Algonquin | 30,046 | McHenry |
| 67 | Granite City | 29,849 | Madison |
| 68 | Niles | 29,803 | Cook |
| 69 | Highland Park | 29,763 | Lake |
| 70 | Lake in the Hills | 28,965 | McHenry |
| 71 | Burbank | 28,925 | Cook |
| 72 | Lansing | 28,331 | Cook |
| 73 | O'Fallon | 28,281 | St. Clair |
| 74 | Round Lake Beach | 28,175 | Lake |
| 75 | Oak Forest | 27,962 | Cook |
| 76 | Alton | 27,865 | Madison |
| 77 | Kankakee  | 27,537 | Kankakee |
| 78 | Glen Ellyn | 27,450 | DuPage |
| 79 | Wilmette | 27,087 | Cook |
| 80 | West Chicago | 27,086 | DuPage |
| 81 | East St. Louis | 27,006 | St. Clair |
| 82 | McHenry | 26,992 | McHenry |
| 83 | Batavia | 26,045 | Kane |
| 84 | Carbondale | 25,902 | Jackson |
| 85 | Freeport  | 25,638 | Stephenson |
| 86 | Belvidere  | 25,585 | Boone |
| 87 | Collinsville | 25,579 | Madison |
| 88 | Melrose Park | 25,411 | Cook |
| 89 | Harvey | 25,282 | Cook |
| 90 | Vernon Hills | 25,113 | Lake |
| 91 | Elmwood Park | 24,883 | Cook |
| 92 | Lockport | 24,839 | Will |
| 93 | Woodstock  | 24,770 | McHenry |
| 94 | Westmont | 24,685 | DuPage |
| 95 | Zion | 24,413 | Lake |
| 96 | New Lenox | 24,394 | Will |
| 97 | Edwardsville  | 24,293 | Madison |
| 98 | Huntley | 24,291 | McHenry |
| 99 | Homer Glen | 24,220 | Will |
| 100 | Rolling Meadows | 24,099 | Cook |
| 101 | Maywood | 24,090 | Cook |
| 102 | Loves Park | 23,996 | Winnebago |
| 103 | Blue Island | 23,706 | Cook |
| 104 | Machesney Park | 23,499 | Winnebago |
| 105 | East Peoria | 23,402 | Tazewell |
| 106 | Morton Grove | 23,270 | Cook |
| 107 | Dolton | 23,153 | Cook |
| 108 | Roselle | 22,763 | DuPage |
| 109 | Lisle | 22,390 | DuPage |
| 110 | Darien | 22,086 | DuPage |
| 111 | South Holland | 22,030 | Cook |
| 112 | Bloomingdale | 22,018 | DuPage |
| 113 | South Elgin | 21,985 | Kane |
| 114 | Park Forest | 21,975 | Cook |
| 115 | Villa Park | 21,904 | DuPage |
| 116 | Charleston  | 21,838 | Coles |
| 117 | Geneva  | 21,495 | Kane |
| 118 | East Moline | 21,302 | Rock Island |
| 119 | Grayslake | 20,957 | Lake |
| 120 | Crest Hill | 20,837 | Will |
| 121 | Libertyville | 20,315 | Lake |
| 122 | Evergreen Park | 19,852 | Cook |
| 123 | Lake Zurich | 19,631 | Lake |
| 124 | Jacksonville  | 19,446 | Morgan |
| 125 | Lake Forest | 19,375 | Lake |
| 126 | Homewood | 19,323 | Cook |
| 127 | Macomb  | 19,288 | McDonough |
| 128 | Alsip | 19,277 | Cook |
| 129 | Bellwood | 19,071 | Cook |
| 130 | Matteson | 19,009 | Cook |
| 131 | Brookfield | 18,978 | Cook |
| 132 | Ottawa  | 18,768 | LaSalle |
| 133 | Mokena | 18,740 | Will |
| 134 | Bourbonnais | 18,631 | Kankakee |
| 135 | Mattoon | 18,555 | Coles |
| 136 | Montgomery | 18,438 | Kane |
| 137 | Bensenville | 18,352 | DuPage |
| 138 | Franklin Park | 18,333 | Cook |
| 139 | Round Lake | 18,289 | Lake |
| 140 | Cary | 18,271 | McHenry |
| 141 | Deerfield | 18,225 | Lake |
| 142 | Godfrey | 17,982 | Madison |
| 143 | Frankfort | 17,782 | Will |
| 144 | Sycamore  | 17,519 | DeKalb |
| 145 | Palos Hills | 17,484 | Cook |
| 146 | Marion  | 17,193 | Williamson |
| 147 | Fairview Heights | 17,078 | St. Clair |
| 148 | Yorkville  | 16,921 | Kendall |
| 149 | Hinsdale | 16,816 | DuPage |
| 150 | North Aurora | 16,760 | Kane |

Map of USA & Illinois
1 - Chicago, Largest city in Illinois
2 - Aurora
3 - Rockford
4 - Joliet
5 - Naperville
6 - Springfield
7 - Peoria
8 - Elgin
9 - Waukegan
10 - Cicero
11 - Champaign
12 - Bloomington
13 - Decatur
14 - Arlington Heights
15 - Evanston