11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Menomonie | 1 | 16,509 | 16,841 | -0.4% | 1,204 | 13.71 | City |
| Colfax | 2 | 1,194 | 1,179 | 0.25% | 859 | 1.39 | Village |
| Boyceville | 3 | 1,099 | 1,099 | 0% | 292 | 3.76 | Village |
| Elk Mound | 4 | 984 | 989 | -0.1% | 432 | 2.28 | Village |
| Knapp | 5 | 499 | 481 | 0.81% | 318 | 1.57 | Village |
| Wheeler | 6 | 332 | 327 | 0.3% | 403 | 0.82 | Village |
| Downsville | 7 | 292 | 201 | 3.55% | 391 | 0.75 | CDP |
| Ridgeland | 8 | 264 | 259 | 0.38% | 574 | 0.46 | Village |
| Rock Falls | 9 | 236 | 167 | 7.27% | 365 | 0.65 | CDP |
| Downing | 10 | 229 | 231 | 0% | 77 | 2.96 | Village |
| Emerald | 11 | 144 | 227 | -0.69% | 77 | 1.87 | CDP |
Menomonie is the largest city in Dunn County, with a population of 16,509.
Emerald is the smallest city in Dunn County.
There are 11 cities in Dunn County, Wisconsin.