Cities & Towns in Illinois,
Illinois, state of the United States of America. As of 2020 state had an estimated population of 12,587,530 inhabitants. The state was created 204 years ago in 1818. Its capital city is "Springfield".
There are more than 100 city/town in Illinois, . The largest city of Illinois is Chicago with a population of 2,677,643. Other cities include, Markham population 328,966, Aurora population 196,383, Naperville population 147,986, Rockford population 144,835
Chicago
Chicago, city and county seat of Cook County, Illinois, United States
Markham
Markham, city in Cook County, Illinois, United States
Aurora
Aurora, city in Kane County, Illinois, United States
All Illinois Cities (Aphebetical)
Cities, Towns, Neighborhoods & Other Populated Places in Illinois.
| City Name | Title | County | Population |
|---|---|---|---|
| Chicago | City and county seat of Cook County, Illinois, United States | Nomós Aitolías kai Akarnanías | 2,677,643 |
| Markham | City in Cook County, Illinois, United States | Cook | 328,966 |
| Aurora | City in Kane County, Illinois, United States | Kane | 196,383 |
| Naperville | City in DuPage and Will counties in Illinois, United States | DuPage | 147,986 |
| Rockford | County seat of Winnebago County, Illinois, United States | Winnebago | 144,835 |
| York | Town in Clark County, Wisconsin, USA | Clark | 124,802 |
| Springfield | City in and county seat of Sangamon County, Illinois, United States and Illinois federated state capital city | Sangamon | 113,671 |
| North Peoria | City in Peoria County, Illinois, United States of America | Peoria | 113,004 |
| Elgin | City in Cook and Kane counties in the northern part of the U. | Kane | 110,196 |
| Peoria | County seat of Peoria County, Illinois, United States | Peoria | 109,428 |
| Bremen | Precinct in Randolph County | Randolph | 106,197 |
| Champaign | Champaign County, Illinois, United States | Champaign | 89,390 |
| Joliet | City in Illinois, United States | Will | 85,583 |
| Waukegan | County seat of Lake County, Illinois, United States | Lake | 85,453 |
| Cicero | Town in Illinois | Cook | 79,727 |
| Bloomington | City in Illinois, United States | McLean | 77,132 |
| Arlington Heights | Village in Cook County, Illinois, United States; suburb of Chicago, Illinois | Cook | 75,101 |
| Bolingbrook | Town in Illinois | Will | 74,025 |
| Evanston | Suburban city in Cook County, Illinois, United States | Cook | 72,683 |
| Schaumburg | Large village located in Cook County in Illinois, USA | Cook | 72,049 |
| Decatur | City in Macon County, Illinois, United States | Macon | 70,007 |
| Palatine | Village in Cook County, Illinois, United States | Cook | 66,830 |
| Skokie | Village in Cook County, Illinois, United States | Cook | 62,404 |
| Lockport | City in Niagara County, New York, United States | Will | 59,877 |
| Des Plaines | City in Cook County, Illinois | Cook | 58,179 |
| Orland Park | Village in Illinois | Cook | 57,347 |
| Tinley Park | Village located in Cook County, Illinois, United States | Cook | 55,221 |
| Normal | Town in McLean County, Illinois, United States | McLean | 54,451 |
| Oak Lawn | Village in Illinois, United States of America | Cook | 54,376 |
| Berwyn | City in Illinois | Cook | 53,701 |
| Mount Prospect | Village in Elk Grove and Wheeling Townships in Cook County, Illinois, United States | Cook | 53,299 |
| Wheaton | City in DuPage County, Illinois, United States | DuPage | 52,451 |
| Oak Park | Village in Cook County, Illinois, United States; suburb of Chicago, Illinois | Cook | 51,852 |
| Hoffman Estates | Northwestern suburb of Chicago in Illinois, United States | Cook | 50,495 |
| Downers Grove | Village in Downers Grove, Lisle, and York Townships, DuPage County, Illinois, US | DuPage | 48,727 |
| Glenview | Village in Cook County, Illinois, United States | Cook | 47,446 |
| Elmhurst | City in Illinois | DuPage | 46,532 |
| Plainfield | Village in Illinois, United States | Jasper | 44,542 |
| Lombard | Village in Illinois | DuPage | 43,961 |
| DeKalb | City in De Kalb County, Illinois, United States | DeKalb | 42,621 |
| Buffalo Grove | Village in Illinois, United States of America | Cook | 41,496 |
| Moline | City in Illinois | Rock Island | 41,065 |
| Belleville | City in Illinois | Saint Clair | 40,536 |
| Bartlett | Village in United States of America | Cook | 40,312 |
| Romeoville | Town | Will | 39,770 |
| Crystal Lake | City located in McHenry County, Illinois, USA | McHenry | 39,642 |
| Quincy | County seat of Adams County, Illinois, United States | Adams | 39,589 |
| Wheeling | City in West Virginia | Cook | 38,958 |
| Carol Stream | Town | DuPage | 38,821 |
| Streamwood | Village in United States of America | Cook | 38,777 |
| Hanover Park | Village in United States of America | Cook | 37,164 |
| Carpentersville | Village in Kane County, Illinois | Kane | 36,940 |
| Rock Island | City in Illinois | Rock Island | 36,870 |
| Oswego | City in and county seat of Oswego County, New York, United States | Kendall | 36,696 |
| Park Ridge | City in Cook County, Illinois, United States | Cook | 36,514 |
| Shields | Township in Lake County, Illinois | Jefferson | 36,451 |
| Calumet City | City in Illinois | Cook | 35,913 |
| Glendale Heights | Town | DuPage | 33,351 |
| Woodridge | Suburb of Chicago in Illinois, USA | DuPage | 33,329 |
| St. Charles | Chicago suburb in Kane and DuPage counties of Illinois, United States | Kane | 32,974 |
| Northbrook | Village in Illinois | Cook | 32,657 |
| Elk Grove | Township in Cook County, Illinois | Cook | 31,831 |
| Elk Grove Village | City in Illinois, United States of America | Cook | 31,831 |
| Pekin | County seat of Tazewell County, Illinois | Tazewell | 31,808 |
| Mundelein | Village in Lake County, Illinois, United States | Lake | 30,945 |
| Algonquin | Village in Illinois | McHenry | 30,730 |
| Bristol | Township in Kendall County, Illinois | Kendall | 30,486 |
| Gurnee | Village in Illinois | Lake | 30,168 |
| Danville | City in and the county seat of Vermilion County, Illinois, United States | Vermilion | 30,106 |
| Galesburg | County seat of Knox County, Illinois, United States | Knox | 29,803 |
| North Chicago | City and suburb of Chicago, Illinois, USA | Lake | 29,639 |
| O'Fallon | Township in St. | Saint Clair | 29,606 |
| Highland Park | City in Lake County, Illinois, United States | Lake | 29,427 |
| Upper Alton | City in Madison County, Illinois, United States of America | Madison | 29,251 |
| Chicago Heights | City in Cook County, Illinois, United States | Cook | 28,990 |
| Niles | City in Trumbull County, Ohio | Cook | 28,615 |
| Lake in the Hills | Village in Illinois | McHenry | 28,345 |
| South Chicago | Former township in Cook County, Illinois | Cook | 28,095 |
| Burbank | City in Cook County, Illinois, United States | Cook | 27,933 |
| Glen Ellyn | Town in DuPage County, Illinois, USA | DuPage | 27,402 |
| Huntley | Village in McHenry and Kane counties, Illinois, United States | McHenry | 27,256 |
| McHenry | City in Illinois | McHenry | 27,100 |
| New Lenox | Village in Illinois | Will | 27,088 |
| Lansing | Village in Illinois, USA | Cook | 27,059 |
| Round Lake Beach | City in Illinois, United States of America | Lake | 26,919 |
| Oak Forest | City in Cook County, Illinois | Cook | 26,884 |
| Wilmette | Village in Cook County, Illinois, United States | Cook | 26,819 |
| West Chicago | City in DuPage County, Illinois, United States | DuPage | 26,593 |
| Batavia | City in Illinois USA | Kane | 26,442 |
| Vernon Hills | City in United States of America | Lake | 26,425 |
| Alton | City in Madison County, Illinois, United States | Madison | 26,049 |
| East Saint Louis | City in St. | Saint Clair | 25,776 |
| Kankakee | City in Kankakee County, Illinois, United States | Kankakee | 25,668 |
| Granite City | Township in Madison County, Illinois | Madison | 25,662 |
| Edwardsville | City in Madison County, Illinois, United States | Madison | 25,189 |
| Carbondale | City in Illinois, USA | Jackson | 25,036 |
| Belvidere | City in Illinois | Boone | 24,731 |
| South Elgin | City in Illinois, United States of America | Kane | 24,646 |
| Melrose Park | Village in Cook County, Illenois, United States of America | Cook | 24,406 |
| Homer Glen | Village in Illinois, United States | Will | 24,281 |
