21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wadena | 1 | 4,378 | 4,353 | 0.11% | 791 | 6 | City |
| Menahga | 2 | 1,370 | 1,350 | 0.29% | 369 | 4 | City |
| Wadena | 3 | 949 | 899 | 1.5% | 30 | 31 | Township |
| Blueberry | 4 | 878 | 836 | 1.39% | 29 | 30 | Township |
| Thomastown | 5 | 872 | 826 | 1.51% | 21 | 41 | Township |
| Sebeka | 6 | 755 | 742 | 0.27% | 305 | 2 | City |
| Red Eye | 7 | 537 | 511 | 1.32% | 15 | 35 | Township |
| Verndale | 8 | 511 | 513 | -0.2% | 495 | 1 | City |
| Leaf River | 9 | 497 | 474 | 1.22% | 14 | 35 | Township |
| Aldrich | 10 | 479 | 453 | 1.48% | 14 | 35 | Township |
| Wing River | 11 | 452 | 426 | 1.8% | 13 | 36 | Township |
| Rockwood | 12 | 405 | 387 | 1% | 12 | 35 | Township |
| North Germany | 13 | 309 | 291 | 1.64% | 9 | 36 | Township |
| Shell River | 14 | 304 | 288 | 1.67% | 9 | 35 | Township |
| Meadow | 15 | 228 | 213 | 2.24% | 6 | 36 | Township |
| Orton | 16 | 210 | 199 | 0.96% | 6 | 34 | Township |
| Bullard | 17 | 203 | 192 | 1.5% | 7 | 30 | Township |
| Lyons | 18 | 197 | 187 | 1.55% | 6 | 35 | Township |
| Huntersville | 19 | 107 | 100 | 1.9% | 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 4,378.
Aldrich is the smallest city in Wadena County, with a population of 34.
There are 21 cities in Wadena County, Minnesota.