Decatur, Indiana 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 20.32K voting-age population of Decatur, IN residents comprised of 392 residents who identified as Hispanic or Latino (1.93%), and 19.93K residents who identified as Non-Hispanic (98.07%).

Race: The White Alone voting-age population was the largest racial group in Decatur, IN, with a voting-age population of 19.27K (94.86%). The Two Or More Races voting-age population was the second largest racial group in Decatur, IN, with a voting-age population of 627 (3.09%). The Some Other Race Alone voting-age population was the third largest racial group in Decatur, IN, with a voting-age population of 173 (0.85%). The smallest racial group in Decatur, IN was Native Hawaiian And Pacific Islander Alone with a voting-age population of 8 (0.04%).

Ethnicity: The Non-Hispanic - White Alone voting-age population was the largest ethnic group in Decatur, IN, with a voting-age population of 19.16K (94.28%). The Non-Hispanic - Two or More Races voting-age population was the second largest ethnic group in Decatur, IN, with a voting-age population of 516 (2.54%). The Hispanic - Some Other Race Alone voting-age population was the third largest ethnic group in Decatur, IN, with a voting-age population of 147 (0.72%). The smallest ethnic group in Decatur, IN 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 Decatur, Indiana from the 2020 decennial census.

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

Decatur, IN Voting-age Hispanics and Non Hispanics Population in Census 2020
Total Voting-age Population:
Decatur, IN Voting-age Racial Groups in Census 2020
Total Voting-age Population:
Decatur, IN Voting-age Ethnicity Groups in Census 2020
Total Voting-age Population:
Decatur, IN 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 63 0.31
White Alone 19273 94.86
American Indian and Alaska Native Alone 44 0.22
Asian Alone 129 0.64
Native Hawaiian And Pacific Islander Alone 8 0.04
Some Other Race Alone 173 0.85
Two Or More Races 627 3.09
Decatur, IN 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 19155 94.28
Non-Hispanic - Two or More Races 516 2.54
Hispanic - Some Other Race Alone 147 0.72
Non-Hispanic - Asian Alone 123 0.61
Hispanic - White Alone 118 0.58
Hispanic - Two or More Races 111 0.55
Non-Hispanic - Black Alone 62 0.31
Non-Hispanic - American Indian & Alaska Native 35 0.17
Non-Hispanic - Some Other Race Alone 26 0.13
Hispanic - American Indian & Alaska Native 9 0.04
Non-Hispanic - Native Hawaiian & Pac. Islander 8 0.04
Hispanic - Asian Alone 6 0.03
Hispanic - Black Alone 1 0.01
Hispanic - Native Hawaiian & Pac. Islander 0 0.00