1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Grundy | 1 | 803 | 886 | -2.07% | 161 | 5 | Town |
Grundy is the largest city in Buchanan County, with a population of 803.
Grundy is the smallest city in Buchanan County, with a population of 803.
There is 1 city in Buchanan County, Virginia.