3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alderson | 1 | 915 | 969 | -0.97% | 1,023 | 1 | Town |
| Peterstown | 2 | 454 | 448 | 0.22% | 1,437 | 0 | Town |
| Union | 3 | 415 | 421 | -0.24% | 928 | 0 | Town |
Alderson is the largest city in Monroe County, with a population of 915.
Union is the smallest city in Monroe County, with a population of 415.
There are 3 cities in Monroe County, West Virginia.