Population By Race and Ethnicity in Buchanan, IA in 2018

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2018, the 21,140 population of Buchanan County, Iowa comprised of 358 people who identified as Hispanic (1.69%), and 20,782 people who identified as Non-Hispanic (98.31%).

Race: The White Alone population was the largest racial group in Buchanan County, Iowa with a population of 20,621 (97.55%); Two Or More Races population was the second largest racial group with a population of 222 (1.05%); and Black or African American Alone was the third largest racial group with a population of 121 (0.57%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Buchanan County, Iowa in 2018, with a population of 20,309 (96.07%); the second largest ethnic group was White Alone - Hispanic with a population of 312 (1.48%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 213 (1.01%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Buchanan, Iowa.

You can find similar information for other Iowa counties, and for Iowa.

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Hispanics and Non Hispanics in Buchanan, IA in 2018
Total Population:
Race in Buchanan, IA in 2018
Total Population:
Ethnicity in Buchanan, IA in 2018
Total Population:
Population By Race in Buchanan , IA in 2018
Race Population Percentage
Black or African American Alone 121 0.57%
White Alone 20,621 97.55%
American Indian and Alaska Native Alone 53 0.25%
Asian Alone 120 0.57%
Native Hawaiian And Pacific Islander Alone 3 0.01%
Two Or More Races 222 1.05%
Population By Ethnicity in Buchanan , IA in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 14 0.07%
White Alone - Hispanic 312 1.48%
American Indian and Alaska Native Alone - Hispanic 21 0.1%
Asian Alone - Hispanic 1 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 1 0.01%
Two Or More Races - Hispanic 9 0.04%
Black or African American Alone - Non Hispanic 107 0.51%
White Alone - Non Hispanic 20,309 96.07%
American Indian and Alaska Native Alone - Non Hispanic 32 0.15%
Asian Alone - Non Hispanic 119 0.56%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.01%
Two Or More Races - Non Hispanic 213 1.01%