16 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alexandria | 1 | 15,165 | 14,411 | 0.84% | 882 | 17 | City |
| Osakis | 2 | 1,735 | 1,771 | -0.34% | 903 | 2 | City |
| Evansville | 3 | 580 | 601 | -0.51% | 740 | 1 | City |
| Brandon | 4 | 497 | 505 | -0.2% | 1,029 | 0 | City |
| Carlos | 5 | 479 | 499 | -0.62% | 1,072 | 0 | City |
| Miltona | 6 | 448 | 429 | 0.67% | 668 | 1 | City |
| Long Beach | 7 | 337 | 342 | -0.3% | 236 | 1 | City |
| Garfield | 8 | 332 | 346 | -0.6% | 412 | 1 | City |
| Kensington | 9 | 272 | 266 | 0.37% | 760 | 0 | City |
| Forada | 10 | 194 | 173 | 2.11% | 361 | 1 | City |
| Nelson | 11 | 184 | 181 | 0.55% | 278 | 1 | City |
| Millerville | 12 | 98 | 101 | 0% | 114 | 1 | City |
| Farwell | 13 | 56 | 56 | 0% | 223 | 0 | City |
| Urbank | 14 | 48 | 48 | 0% | 73 | 1 | City |
| Westport | 15 | 47 | 44 | 2.17% | 178 | 0 | City |
| Sedan | 16 | 46 | 45 | 0% | 91 | 1 | City |
Alexandria is the largest city in Douglas County, with a population of 15,165.
Sedan is the smallest city in Douglas County, with a population of 46.
There are 16 cities in Douglas County, Minnesota.