Buchanan, Iowa Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 20.57K population of Buchanan, IA residents comprised of 338 residents who identified as Hispanic or Latino (1.64%), and 20.23K residents who identified as Non-Hispanic (98.36%).

Race: The White Alone population was the largest racial group in Buchanan, IA, with a population of 19.70K (95.77%). The Two Or More Races population was the second largest racial group in Buchanan, IA, with a population of 605 (2.94%). The Some Other Race Alone population was the third largest racial group in Buchanan, IA, with a population of 100 (0.49%). The smallest racial group in Buchanan, IA was Native Hawaiian And Pacific Islander Alone with a population of 12 (0.06%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Buchanan, IA, with a population of 19.57K (95.14%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Buchanan, IA, with a population of 494 (2.40%). The Hispanic - White Alone population was the third largest ethnic group in Buchanan, IA, with a population of 131 (0.64%). The smallest ethnic group in Buchanan, IA was Hispanic - Asian Alone with a population of 0 (0.00%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in Buchanan, Iowa from the 2020 decennial census.

You can see similar information for other Iowa counties and also for the state of Iowa.

Buchanan, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:
Buchanan, IA Racial Groups in Census 2020
Total Population:
Buchanan, IA Ethnicity Groups in Census 2020
Total Population:
Buchanan, IA Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 72 0.35
White Alone 19696 95.77
American Indian and Alaska Native Alone 28 0.14
Asian Alone 52 0.25
Native Hawaiian And Pacific Islander Alone 12 0.06
Some Other Race Alone 100 0.49
Two Or More Races 605 2.94
Buchanan, IA Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 19565 95.14
Non-Hispanic - Two or More Races 494 2.40
Hispanic - White Alone 131 0.64
Hispanic - Two or More Races 111 0.54
Hispanic - Some Other Race Alone 83 0.40
Non-Hispanic - Black Alone 70 0.34
Non-Hispanic - Asian Alone 52 0.25
Non-Hispanic - American Indian & Alaska Native 18 0.09
Non-Hispanic - Some Other Race Alone 17 0.08
Non-Hispanic - Native Hawaiian & Pac. Islander 11 0.05
Hispanic - American Indian & Alaska Native 10 0.05
Hispanic - Black Alone 2 0.01
Hispanic - Native Hawaiian & Pac. Islander 1 0.01
Hispanic - Asian Alone 0 0.00