Identifiers: city · village
| Rank | Community | Population |
|---|---|---|
| 1 | Aurora (city), IL | 180,542 |
| 2 | Naperville (city), IL | 149,540 |
| 3 | Bolingbrook (village), IL | 73,922 |
| 4 | Wheaton (city), IL | 53,970 |
| 5 | Downers Grove (village), IL | 50,247 |
| 6 | Elmhurst (city), IL | 45,786 |
| 7 | Plainfield (village), IL | 44,762 |
| 8 | Lombard (village), IL | 44,476 |
| 9 | Bartlett (village), IL | 41,105 |
| 10 | Carol Stream (village), IL | 39,854 |
| 11 | Streamwood (village), IL | 39,577 |
| 12 | Hanover Park (village), IL | 37,470 |
| 13 | Addison (village), IL | 35,702 |
| 14 | Oswego (village), IL | 34,585 |
| 15 | Woodridge (village), IL | 34,158 |
| 16 | Glendale Heights (village), IL | 33,176 |
| 17 | St. Charles (city), IL | 33,081 |
| 18 | Glen Ellyn (village), IL | 28,846 |
| 19 | Batavia (city), IL | 26,098 |
| 20 | West Chicago (city), IL | 25,614 |
Identifiers: city · village
| Rank | Community | Population |
|---|---|---|
| 1 | Aurora (city), IL | 180,542 |
| 2 | Naperville (city), IL | 149,540 |
| 3 | Bolingbrook (village), IL | 73,922 |
| 4 | Wheaton (city), IL | 53,970 |
| 5 | Downers Grove (village), IL | 50,247 |
| 6 | Elmhurst (city), IL | 45,786 |
| 7 | Plainfield (village), IL | 44,762 |
| 8 | Lombard (village), IL | 44,476 |
| 9 | Bartlett (village), IL | 41,105 |
| 10 | Carol Stream (village), IL | 39,854 |
| 11 | Streamwood (village), IL | 39,577 |
| 12 | Hanover Park (village), IL | 37,470 |
| 13 | Addison (village), IL | 35,702 |
| 14 | Oswego (village), IL | 34,585 |
| 15 | Woodridge (village), IL | 34,158 |
| 16 | Glendale Heights (village), IL | 33,176 |
| 17 | St. Charles (city), IL | 33,081 |
| 18 | Glen Ellyn (village), IL | 28,846 |
| 19 | Batavia (city), IL | 26,098 |
| 20 | West Chicago (city), IL | 25,614 |