19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Menomonie | 1 | 16,671 | 16,862 | -0.23% | 1,216 | 14 | City |
| Menomonie | 2 | 16,671 | 16,860 | -0.23% | 1,216 | 14 | City |
| Colfax | 3 | 1,209 | 1,183 | 0.42% | 870 | 1 | Village |
| Colfax | 4 | 1,209 | 1,182 | 0.42% | 870 | 1 | Village |
| Elk Mound | 5 | 1,120 | 989 | 2.38% | 492 | 2 | Village |
| Elk Mound | 6 | 1,120 | 988 | 2.38% | 492 | 2 | Village |
| Boyceville | 7 | 1,093 | 1,099 | -0.09% | 291 | 4 | Village |
| Boyceville | 8 | 1,093 | 1,098 | -0.09% | 291 | 4 | Village |
| Knapp | 9 | 490 | 481 | 0.2% | 312 | 2 | Village |
| Knapp | 10 | 490 | 482 | 0.2% | 312 | 2 | Village |
| Wheeler | 11 | 327 | 327 | 0% | 397 | 1 | Village |
| Wheeler | 12 | 327 | 327 | 0% | 397 | 1 | Village |
| Downsville | 13 | 292 | 201 | 3.55% | 391 | 1 | CDP |
| Ridgeland | 14 | 261 | 259 | 0% | 567 | 0 | Village |
| Ridgeland | 15 | 261 | 259 | 0% | 567 | 0 | Village |
| Rock Falls | 16 | 236 | 167 | 7.27% | 365 | 1 | CDP |
| Downing | 17 | 223 | 230 | -0.89% | 75 | 3 | Village |
| Downing | 18 | 223 | 230 | -0.89% | 75 | 3 | Village |
| Emerald | 19 | 144 | 227 | -0.69% | 77 | 2 | CDP |
Menomonie is the largest city in Dunn County, with a population of 16,671.
Emerald is the smallest city in Dunn County, with a population of 144.
There are 19 cities in Dunn County, Wisconsin.