43 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Roseau | 1 | 2,676 | 2,745 | -0.41% | 1,001 | 3 | City |
| Warroad | 2 | 2,063 | 1,822 | 1.98% | 630 | 3 | City |
| Lake | 3 | 1,965 | 1,979 | -0.35% | 34 | 57 | Township |
| Greenbush | 4 | 1,338 | 1,305 | 0.38% | 36 | 37 | Township |
| Moranville | 5 | 876 | 910 | -0.57% | 25 | 35 | Township |
| Greenbush | 6 | 668 | 685 | -0.45% | 435 | 2 | City |
| Roosevelt | 7 | 639 | 585 | 1.75% | 20 | 31 | Township |
| Jadis | 8 | 595 | 620 | -0.5% | 12 | 49 | Township |
| Spruce | 9 | 551 | 575 | -0.72% | 16 | 35 | Township |
| Laona | 10 | 485 | 505 | -0.61% | 13 | 38 | Township |
| Ross | 11 | 466 | 406 | 1.97% | 13 | 36 | Township |
| Badger | 12 | 410 | 430 | -0.73% | 307 | 1 | City |
| Enstrom | 13 | 405 | 418 | -0.49% | 11 | 36 | Township |
| Malung | 14 | 376 | 390 | -0.53% | 10 | 36 | Township |
| Stafford | 15 | 258 | 269 | -0.77% | 7 | 36 | Township |
| Mickinock | 16 | 253 | 264 | -0.78% | 7 | 38 | Township |
| Falun | 17 | 235 | 241 | -0.84% | 7 | 36 | Township |
| Hereim | 18 | 218 | 228 | -0.91% | 7 | 33 | Township |
| Roosevelt | 19 | 214 | 224 | -0.47% | 6 | 34 | Township |
| Stokes | 20 | 212 | 219 | -0.47% | 6 | 36 | Township |
| Skagen | 21 | 193 | 200 | -0.52% | 5 | 35 | Township |
| Golden Valley | 22 | 174 | 181 | -0.57% | 5 | 36 | Township |
| Cedarbend | 23 | 163 | 156 | 1.88% | 5 | 36 | Township |
| Roosevelt | 24 | 155 | 158 | 0% | 151 | 1 | City |
| Dieter | 25 | 143 | 147 | -0.69% | 3 | 44 | Township |
| Barnett | 26 | 134 | 138 | -0.74% | 4 | 37 | Township |
| Grimstad | 27 | 118 | 121 | 0% | 3 | 37 | Township |
| Badger | 28 | 114 | 113 | 0.88% | 3 | 36 | Township |
| Barto | 29 | 114 | 117 | 0% | 3 | 37 | Township |
| Deer | 30 | 104 | 109 | -0.95% | 3 | 36 | Township |
| Huss | 31 | 104 | 109 | -0.95% | 3 | 36 | Township |
| Moose | 32 | 98 | 103 | -1.01% | 3 | 36 | Township |
| Dewey | 33 | 94 | 99 | -1.05% | 3 | 35 | Township |
| Beaver | 34 | 92 | 97 | -1.08% | 3 | 35 | Township |
| Reine | 35 | 87 | 92 | -1.14% | 2 | 36 | Township |
| Soler | 36 | 85 | 87 | 0% | 2 | 36 | Township |
| Poplar Grove | 37 | 78 | 78 | 0% | 2 | 36 | Township |
| Nereson | 38 | 50 | 54 | -1.96% | 1 | 36 | Township |
| Palmville | 39 | 44 | 45 | 0% | 1 | 36 | Township |
| Pohlitz | 40 | 35 | 36 | 0% | 1 | 43 | Township |
| Lind | 41 | 30 | 31 | 0% | 1 | 36 | Township |
| Strathcona | 42 | 27 | 29 | 0% | 54 | 0 | City |
| Polonia | 43 | 23 | 24 | 0% | 1 | 37 | Township |
Roseau is the largest city in Roseau County, with a population of 2,676.
Polonia is the smallest city in Roseau County, with a population of 23.
There are 43 cities in Roseau County, Minnesota.