Identifiers: city · town · village
| Rank | Community | Population |
|---|---|---|
| 1 | Chicago (city), IL | 2,746,388 |
| 2 | Cicero (town), IL | 85,268 |
| 3 | Schaumburg (village), IL | 78,723 |
| 4 | Evanston (city), IL | 78,110 |
| 5 | Arlington Heights (village), IL | 77,676 |
| 6 | Palatine (village), IL | 67,908 |
| 7 | Skokie (village), IL | 67,824 |
| 8 | Des Plaines (city), IL | 60,675 |
| 9 | Berwyn (city), IL | 57,250 |
| 10 | Mount Prospect (village), IL | 56,852 |
| 11 | Oak Park (village), IL | 54,583 |
| 12 | Hoffman Estates (village), IL | 52,530 |
| 13 | Downers Grove (village), IL | 50,247 |
| 14 | Glenview (village), IL | 48,705 |
| 15 | Elmhurst (city), IL | 45,786 |
| 16 | Lombard (village), IL | 44,476 |
| 17 | Buffalo Grove (village), IL | 43,212 |
| 18 | Park Ridge (city), IL | 39,656 |
| 19 | Streamwood (village), IL | 39,577 |
| 20 | Wheeling (village), IL | 39,137 |