10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Welch | 1 | 3,364 | 3,609 | -1.44% | 441 | 8 | City |
| Gary | 2 | 667 | 765 | -2.91% | 793 | 1 | City |
| War | 3 | 528 | 615 | -3.3% | 593 | 1 | City |
| Kimball | 4 | 240 | 280 | -3.23% | 397 | 1 | Town |
| Iaeger | 5 | 235 | 273 | -3.29% | 244 | 1 | Town |
| Northfork | 6 | 198 | 230 | -3.41% | 205 | 1 | Town |
| Davy | 7 | 179 | 206 | -3.24% | 141 | 1 | Town |
| Bradshaw | 8 | 176 | 203 | -3.3% | 227 | 1 | Town |
| Keystone | 9 | 148 | 173 | -3.27% | 457 | 0 | City |
| Anawalt | 10 | 143 | 165 | -3.38% | 249 | 1 | Town |
Welch is the largest city in McDowell County, with a population of 3,364.
Anawalt is the smallest city in McDowell County, with a population of 143.
There are 10 cities in McDowell County, West Virginia.