10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Little Eagle | 1 | 349 | 309 | 0.58% | 250 | 1.40 | CDP |
| Wakpala | 2 | 296 | 292 | 7.25% | 676 | 0.44 | CDP |
| Wakpala township | 3 | 264 | 278 | -1.12% | 13 | 20.30 | Township |
| Bullhead | 4 | 226 | 296 | -3.42% | 75 | 3.01 | CDP |
| Ridgeland township | 5 | 47 | 51 | -2.08% | 1 | 82.07 | Township |
| Morristown | 6 | 44 | 46 | 0% | 125 | 0.35 | Town |
| Rolling Green township | 7 | 32 | 33 | 0% | 1 | 50.87 | Township |
| Pleasant Ridge township | 8 | 30 | 31 | 0% | 1 | 35.90 | Township |
| Watauga township | 9 | 24 | 25 | 0% | 2 | 15.85 | Township |
| Prairie View township | 10 | 18 | 21 | -5.26% | 1 | 35.74 | Township |
Little Eagle is the largest city in Corson County, with a population of 349.
Prairie View township is the smallest city in Corson County.
There are 10 cities in Corson County, South Dakota.