21 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wadena | 1 | 4,383 | 4,353 | 0.11% | 792 | 6 | City |
| Menahga | 2 | 1,374 | 1,350 | 0.29% | 370 | 4 | City |
| Wadena | 3 | 963 | 899 | 1.48% | 31 | 31 | Township |
| Blueberry | 4 | 890 | 836 | 1.37% | 29 | 30 | Township |
| Thomastown | 5 | 885 | 826 | 1.49% | 22 | 41 | Township |
| Sebeka | 6 | 758 | 742 | 0.4% | 307 | 2 | City |
| Red Eye | 7 | 544 | 511 | 1.3% | 15 | 35 | Township |
| Verndale | 8 | 511 | 513 | 0% | 495 | 1 | City |
| Leaf River | 9 | 503 | 474 | 1.21% | 14 | 35 | Township |
| Aldrich | 10 | 486 | 453 | 1.46% | 14 | 35 | Township |
| Wing River | 11 | 460 | 426 | 1.77% | 13 | 36 | Township |
| Rockwood | 12 | 409 | 387 | 0.99% | 12 | 35 | Township |
| North Germany | 13 | 314 | 291 | 1.62% | 9 | 36 | Township |
| Shell River | 14 | 309 | 288 | 1.64% | 9 | 35 | Township |
| Meadow | 15 | 233 | 213 | 2.19% | 6 | 36 | Township |
| Orton | 16 | 212 | 199 | 0.95% | 6 | 34 | Township |
| Bullard | 17 | 206 | 192 | 1.48% | 7 | 30 | Township |
| Lyons | 18 | 200 | 187 | 1.52% | 6 | 35 | Township |
| Huntersville | 19 | 109 | 100 | 1.87% | 3 | 35 | Township |
| Nimrod | 20 | 82 | 82 | 0% | 86 | 1 | City |
| Aldrich | 21 | 34 | 34 | 0% | 69 | 0 | City |
Wadena is the largest city in Wadena County, with a population of 4,383.
Aldrich is the smallest city in Wadena County, with a population of 34.
There are 21 cities in Wadena County, Minnesota.