| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Clifton Forge | 1 | 3,338 | 3,539 | -1.01% | 1,105 | 3 | Town |
| Iron Gate | 2 | 302 | 320 | -0.98% | 915 | 0 | Town |
Clifton Forge is the largest city in Alleghany County, with a population of 3,338.
Iron Gate is the smallest city in Alleghany County, with a population of 302.
There are 2 cities in Alleghany County, Virginia.