2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Petersburg | 1 | 2,249 | 2,296 | -0.4% | 1,392 | 1.62 | City |
| Bayard | 2 | 189 | 199 | -1.05% | 608 | 0.31 | Town |
Petersburg is the largest city in Grant County, with a population of 2,249.
Bayard is the smallest city in Grant County.
There are 2 cities in Grant County, West Virginia.