21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wadena | 1 | 4,323 | 4,343 | -0.09% | 781 | 5.53 | City |
| Menahga | 2 | 1,347 | 1,347 | 0% | 363 | 3.71 | City |
| Wadena | 3 | 924 | 908 | 0% | 29 | 31.38 | Township |
| Blueberry | 4 | 854 | 835 | 0.23% | 28 | 30.20 | Township |
| Thomastown | 5 | 848 | 823 | 0.47% | 21 | 41 | Township |
| Sebeka | 6 | 740 | 740 | 0% | 299 | 2.47 | City |
| Red Eye | 7 | 523 | 510 | 0.19% | 15 | 35.10 | Township |
| Verndale | 8 | 507 | 516 | -0.39% | 491 | 1.03 | City |
| Leaf River | 9 | 481 | 472 | 0% | 14 | 35.19 | Township |
| Aldrich | 10 | 468 | 455 | 0.21% | 14 | 34.50 | Township |
| Wing River | 11 | 441 | 428 | 0.46% | 12 | 35.99 | Township |
| Rockwood | 12 | 389 | 387 | -0.51% | 11 | 34.58 | Township |
| North Germany | 13 | 299 | 290 | 0.34% | 8 | 35.97 | Township |
| Shell River | 14 | 295 | 288 | 0% | 8 | 34.91 | Township |
| Meadow | 15 | 218 | 214 | 0% | 6 | 36.07 | Township |
| Orton | 16 | 208 | 200 | 0.48% | 6 | 34.49 | Township |
| Bullard | 17 | 200 | 193 | 0.5% | 7 | 30.43 | Township |
| Lyons | 18 | 192 | 188 | 0% | 5 | 35 | Township |
| Huntersville | 19 | 104 | 99 | 0.97% | 3 | 35.07 | Township |
| Nimrod | 20 | 82 | 82 | 0% | 86 | 0.95 | City |
| Aldrich | 21 | 34 | 34 | 0% | 69 | 0.49 | City |
Wadena is the largest city in Wadena County, with a population of 4,323.
Aldrich is the smallest city in Wadena County, with a population of 34.
There are 21 cities in Wadena County, Minnesota.