Identifiers: city · CDP · village
| Rank | Community | Population |
|---|---|---|
| 1 | Janesville (city), WI | 65,615 |
| 2 | Beloit (city), WI | 36,657 |
| 3 | Delavan (city), WI | 8,505 |
| 4 | Edgerton (city), WI | 5,945 |
| 5 | Milton (city), WI | 5,716 |
| 6 | Delavan Lake (CDP), WI | 2,803 |
| 7 | Clinton (village), WI | 2,221 |
| 8 | Darien (village), WI | 1,573 |
| 9 | Orfordville (village), WI | 1,473 |
| 10 | Footville (village), WI | 772 |
| 11 | Hanover (CDP), WI | 179 |
| 12 | Allens Grove (CDP), WI | 174 |
| 13 | Shopiere (CDP), WI | 154 |