List of Towns , Cities and villages in Cook County, IL in alphabetical order
- Alsip
- Arlington Heights
- Bellwood
- Berwyn
- Blue Island
- Brookfield
- Burbank
- Calumet City
- Chicago
- Chicago Heights
- Country Club Hills
- Countryside
- Des Plaines
- Dolton
- Elgin
- Elk Grove Village
- Elmhurst
- Evanston
- Flossmoor
- Forest Park
- Forest View
- Franklin Park
- Glenview
- Golf
- Hanover Park
- Harwood Heights
- Harvey
- Hickory Hills
- Hometown
- Homewood
- Justice
- Kenilworth
- La Grange
- La Grange Park
- Lansing
- Lemont
- Lincolnwood
- Lynwood
- Lyons
- Markham
- Matteson
- Maywood
- McCook
- Melrose Park
- Merrionette Park
- Midlothian
- Morton Grove
- Mount Prospect
- Niles
- Norridge
- Northbrook
- Northlake
- North Riverside
- Oak Brook
- Oak Forest
- Oak Lawn
- Oak Park
- Olympia Fields
- Orland Hills
- Orland Park
- Palatine
- Palos Heights
- Palos Hills
- Park Forest
- Park Ridge
- Phoenix
- Posen
- Prospect Heights
- Richton Park
- River Forest
- River Grove
- Riverdale
- Riverside
- Robbins
- Rolling Meadows
- Roselle
- Rosemont
- Sauk Village
- Schaumburg
- Schiller Park
- Skokie
- South Barrington
- South Chicago Heights
- South Holland
- Steger
- Stickney
- Stone Park
- Streamwood
- Summit
- Thornton
- Tinley Park
- University Park
- Westchester
- Western Springs
- Wheeling
- Willow Springs
- Wilmette
- Worth
Top 20 Municipalities by Population (2025 Estimates)
| Rank | Municipality | Population (2025) | Type |
|---|---|---|---|
| 1 | Chicago | 2,611,867 | City |
| 2 | Cicero | 78,409 | Town |
| 3 | Schaumburg | 73,970 | Village |
| 4 | Evanston | 73,240 | City |
| 5 | Arlington Heights | 72,545 | Village |
| 6 | Skokie | 63,105 | Village |
| 7 | Palatine | 62,996 | Village |
| 8 | Des Plaines | 56,380 | City |
| 9 | Orland Park | 56,094 | Village |
| 10 | Oak Lawn | 54,125 | Village |
| 11 | Mount Prospect | 52,701 | Village |
| 12 | Berwyn | 52,694 | City |
| 13 | Tinley Park | 52,594 | Village |
| 14 | Oak Park | 50,510 | Village |
| 15 | Hoffman Estates | 48,711 | Village |
| 16 | Glenview | 45,811 | Village |
| 17 | Park Ridge | 36,830 | City |
| 18 | Wheeling | 36,751 | Village |
| 19 | Streamwood | 36,678 | Village |
| 20 | Hanover Park | 35,376 | Village |