Data / Population / Buchanan County

Population in Buchanan County

Population in Buchanan County was 18,492 in 2025, according to the U.S. Census Bureau. That is down 1.2% from 2024. That is the 84th highest of 133 counties in 2025.

2025, persons18,492
Change on 2024-1.2%
Rank84th of 133Counties in Virginia ranked
Series high20,2472020
Series low18,4922025

Population in Buchanan County, 2020 to 2025

CSVChart (SVG)

18K18.5K19K19.5K20K20.5K2020202120222023202420252020: 20,247 persons2021: 19,883 persons2022: 19,318 persons2023: 18,981 persons2024: 18,723 persons2025: 18,492 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202518,492
202418,723
202318,981
202219,318
202119,883
202020,247

Compared with Virginia and United States

Place2025
Buchanan County18,492
Virginia8,880,107
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

What is the population in Buchanan County?

Population in Buchanan County was 18,492 in 2025, according to the U.S. Census Bureau. That is down 1.2% from 2024. That is the 84th highest of 133 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Buchanan County?

20,247 in 2020, the highest value since 2020 in this series.

More statistics for Buchanan County

All statistics for Buchanan County