| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alexandria | 1 | 15,172 | 14,414 | 0.84% | 883 | 17 | City |
| Osakis | 2 | 1,732 | 1,769 | -0.4% | 902 | 2 | City |
| Evansville | 3 | 580 | 600 | -0.68% | 740 | 1 | City |
| Brandon | 4 | 508 | 504 | -0.2% | 1,052 | 0 | City |
| Carlos | 5 | 479 | 498 | -0.62% | 1,072 | 0 | City |
| Miltona | 6 | 457 | 431 | 0.66% | 681 | 1 | City |
| Garfield | 7 | 337 | 347 | -0.59% | 419 | 1 | City |
| Long Beach | 8 | 332 | 341 | -0.6% | 233 | 1 | City |
| Kensington | 9 | 271 | 266 | 0.37% | 757 | 0 | City |
| Forada | 10 | 190 | 172 | 1.6% | 354 | 1 | City |
| Nelson | 11 | 187 | 181 | 0.54% | 283 | 1 | City |
| Millerville | 12 | 96 | 100 | -1.03% | 111 | 1 | City |
| Farwell | 13 | 55 | 57 | -1.79% | 219 | 0 | City |
| Urbank | 14 | 47 | 47 | 0% | 71 | 1 | City |
| Sedan | 15 | 46 | 45 | 0% | 91 | 1 | City |
| Westport | 16 | 44 | 43 | 0% | 167 | 0 | City |
Alexandria is the largest city in Douglas County, with a population of 15,172.
Westport is the smallest city in Douglas County, with a population of 44.
There are 16 cities in Douglas County, Minnesota.