Population: Buchanan County

Latest value, 2025

20,883persons

Source: U.S. Census Bureau
Retrieved 2026-10-08
Published 2026-03-26

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.

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.

Evolution

20,61820,74620,873202020212022202320242025
Value
PeriodValue
202520,883
202420,711
202320,725
202220,705
202120,718
202020,608

Comparison with related places

Place2025
Buchanan County20,883
Iowa3,238,387
United States341,784,857
Jones County21,253
Buena Vista County20,449
Carroll County20,303
Mahaska County21,880
Winneshiek County19,733

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.

Get this figure from your agent

Call get_value through the MCP server or the REST API.

get_value {"indicator":"population","place":"us-county-19019"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-19019

Other indicators for Buchanan County

Statistics for Buchanan County