4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alderson | 1 | 923 | 968 | -0.97% | 1,032 | 0.89 | Town |
| Peterstown | 2 | 449 | 449 | 0% | 1,421 | 0.32 | Town |
| Union | 3 | 411 | 420 | -0.48% | 919 | 0.45 | Town |
| Greenville | 4 | 290 | 305 | 7.01% | 2,014 | 0.14 | CDP |
Alderson is the largest city in Monroe County, with a population of 923.
Greenville is the smallest city in Monroe County.
There are 4 cities in Monroe County, West Virginia.