| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Blacksburg | 1 | 45,217 | 44,766 | 0.25% | 2,284 | 20 | Town |
| Christiansburg | 2 | 22,231 | 23,315 | -0.94% | 1,510 | 15 | Town |
Blacksburg is the largest city in Montgomery County, with a population of 45,217.
Christiansburg is the smallest city in Montgomery County, with a population of 22,231.
There are 2 cities in Montgomery County, Virginia.