3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alderson | 1 | 924 | 969 | -0.96% | 1,034 | 1 | Town |
| Peterstown | 2 | 453 | 448 | 0.22% | 1,434 | 0 | Town |
| Union | 3 | 416 | 421 | -0.24% | 931 | 0 | Town |
Alderson is the largest city in Monroe County, with a population of 924.
Union is the smallest city in Monroe County, with a population of 416.
There are 3 cities in Monroe County, West Virginia.