Mahaska, 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 22.19K population of Mahaska, IA residents comprised of 480 residents who identified as Hispanic or Latino (2.16%), and 21.71K residents who identified as Non-Hispanic (97.84%).

Race: The White Alone population was the largest racial group in Mahaska, IA, with a population of 20.45K (92.17%). The Two Or More Races population was the second largest racial group in Mahaska, IA, with a population of 883 (3.98%). The Black or African American Alone population was the third largest racial group in Mahaska, IA, with a population of 394 (1.78%). The smallest racial group in Mahaska, IA was Native Hawaiian And Pacific Islander Alone with a population of 15 (0.07%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Mahaska, IA, with a population of 20.26K (91.30%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Mahaska, IA, with a population of 727 (3.28%). The Non-Hispanic - Black Alone population was the third largest ethnic group in Mahaska, IA, with a population of 384 (1.73%). The smallest ethnic group in Mahaska, IA was Hispanic - Native Hawaiian & Pac. Islander 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 Mahaska, Iowa from the 2020 decennial census.

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

Mahaska, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:
Mahaska, IA Racial Groups in Census 2020
Total Population:
Mahaska, IA Ethnicity Groups in Census 2020
Total Population:
Mahaska, IA Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 394 1.78
White Alone 20453 92.17
American Indian and Alaska Native Alone 41 0.19
Asian Alone 253 1.14
Native Hawaiian And Pacific Islander Alone 15 0.07
Some Other Race Alone 151 0.68
Two Or More Races 883 3.98
Mahaska, IA Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 20259 91.30
Non-Hispanic - Two or More Races 727 3.28
Non-Hispanic - Black Alone 384 1.73
Non-Hispanic - Asian Alone 250 1.13
Hispanic - White Alone 194 0.87
Hispanic - Two or More Races 156 0.70
Hispanic - Some Other Race Alone 117 0.53
Non-Hispanic - American Indian & Alaska Native 41 0.19
Non-Hispanic - Some Other Race Alone 34 0.15
Non-Hispanic - Native Hawaiian & Pac. Islander 15 0.07
Hispanic - Black Alone 10 0.05
Hispanic - Asian Alone 3 0.01
Hispanic - American Indian & Alaska Native 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00