COUNTY · VA
Buchanan County, Virginia
Buchanan County is a county in Virginia with FIPS code 51027 and an estimated population of 19,087 (Census 2023), 81st largest of 133 in the state.
County facts
- Name
- Buchanan County
- State
- Virginia
- Type
- county
- FIPS code
- 51027
- State FIPS
- 51
- Population (2023)
- 19,087
- Change since 2020
- -5.7%
- State rank
- 81 of 133
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Buchanan County?
Buchanan County, Virginia has the five-digit FIPS code 51027: 51 for the state and 027 for the county.
What state is Buchanan County in?
Buchanan County is in Virginia.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.