| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Menomonie | 1 | 16,615 | 16,853 | -0.29% | 1,212 | 14 | City |
| Colfax | 2 | 1,197 | 1,171 | 0.34% | 861 | 1 | Village |
| Elk Mound | 3 | 1,109 | 986 | 2.31% | 487 | 2 | Village |
| Boyceville | 4 | 1,075 | 1,085 | -0.19% | 286 | 4 | Village |
| Knapp | 5 | 486 | 480 | 0.21% | 310 | 2 | Village |
| Wheeler | 6 | 326 | 329 | -0.31% | 396 | 1 | Village |
| Ridgeland | 7 | 262 | 261 | 0% | 570 | 0 | Village |
| Downing | 8 | 223 | 231 | -0.89% | 75 | 3 | Village |
Menomonie is the largest city in Dunn County, with a population of 16,615.
Downing is the smallest city in Dunn County, with a population of 223.
There are 8 cities in Dunn County, Wisconsin.