Madison, Iowa Voting-age Population By Race and Ethnicity from Census 2020

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 12.32K voting-age population of Madison, IA residents comprised of 198 residents who identified as Hispanic or Latino (1.61%), and 12.12K residents who identified as Non-Hispanic (98.39%).

Race: The White Alone voting-age population was the largest racial group in Madison, IA, with a voting-age population of 11.74K (95.30%). The Two Or More Races voting-age population was the second largest racial group in Madison, IA, with a voting-age population of 399 (3.24%). The Some Other Race Alone voting-age population was the third largest racial group in Madison, IA, with a voting-age population of 71 (0.58%). The smallest racial group in Madison, IA was Native Hawaiian And Pacific Islander Alone with a voting-age population of 1 (0.01%).

Ethnicity: The Non-Hispanic - White Alone voting-age population was the largest ethnic group in Madison, IA, with a voting-age population of 11.68K (94.77%). The Non-Hispanic - Two or More Races voting-age population was the second largest ethnic group in Madison, IA, with a voting-age population of 313 (2.54%). The Hispanic - Two or More Races voting-age population was the third largest ethnic group in Madison, IA, with a voting-age population of 86 (0.70%). The smallest ethnic group in Madison, IA was Hispanic - Native Hawaiian & Pac. Islander with a voting-age population of 0 (0.00%).

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

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

Madison, IA Voting-age Hispanics and Non Hispanics Population in Census 2020
Total Voting-age Population:
Madison, IA Voting-age Racial Groups in Census 2020
Total Voting-age Population:
Madison, IA Voting-age Ethnicity Groups in Census 2020
Total Voting-age Population:
Madison, IA Voting-age Population of Racial Groups in Census 2020
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Race Voting-age Population % of County Voting-age Population
Black or African American Alone 31 0.25
White Alone 11742 95.30
American Indian and Alaska Native Alone 18 0.15
Asian Alone 59 0.48
Native Hawaiian And Pacific Islander Alone 1 0.01
Some Other Race Alone 71 0.58
Two Or More Races 399 3.24
Madison, IA Voting-age Population of Ethnicity Groups in Census 2020
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Ethnicity Voting-age Population % of County Voting-age Population
Non-Hispanic - White Alone 11676 94.77
Non-Hispanic - Two or More Races 313 2.54
Hispanic - Two or More Races 86 0.70
Hispanic - White Alone 66 0.54
Non-Hispanic - Asian Alone 59 0.48
Hispanic - Some Other Race Alone 36 0.29
Non-Hispanic - Some Other Race Alone 35 0.28
Non-Hispanic - Black Alone 31 0.25
Hispanic - American Indian & Alaska Native 10 0.08
Non-Hispanic - American Indian & Alaska Native 8 0.07
Non-Hispanic - Native Hawaiian & Pac. Islander 1 0.01
Hispanic - Black Alone 0 0.00
Hispanic - Asian Alone 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00