Sioux, 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 35.87K population of Sioux, IA residents comprised of 4.91K residents who identified as Hispanic or Latino (13.70%), and 30.96K residents who identified as Non-Hispanic (86.30%).

Race: The White Alone population was the largest racial group in Sioux, IA, with a population of 30.75K (85.71%). The Two Or More Races population was the second largest racial group in Sioux, IA, with a population of 2.24K (6.26%). The Some Other Race Alone population was the third largest racial group in Sioux, IA, with a population of 2.24K (6.25%). The smallest racial group in Sioux, IA was Native Hawaiian And Pacific Islander Alone with a population of 5 (0.01%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Sioux, IA, with a population of 29.92K (83.41%). The Hispanic - Some Other Race Alone population was the second largest ethnic group in Sioux, IA, with a population of 2.20K (6.13%). The Hispanic - Two or More Races population was the third largest ethnic group in Sioux, IA, with a population of 1.74K (4.86%). The smallest ethnic group in Sioux, 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 Sioux, Iowa from the 2020 decennial census.

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

Sioux, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:
Sioux, IA Racial Groups in Census 2020
Total Population:
Sioux, IA Ethnicity Groups in Census 2020
Total Population:
Sioux, IA Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 195 0.54
White Alone 30745 85.71
American Indian and Alaska Native Alone 218 0.61
Asian Alone 224 0.62
Native Hawaiian And Pacific Islander Alone 5 0.01
Some Other Race Alone 2241 6.25
Two Or More Races 2244 6.26
Sioux, IA Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 29919 83.41
Hispanic - Some Other Race Alone 2199 6.13
Hispanic - Two or More Races 1742 4.86
Hispanic - White Alone 826 2.30
Non-Hispanic - Two or More Races 502 1.40
Non-Hispanic - Asian Alone 219 0.61
Non-Hispanic - Black Alone 184 0.51
Hispanic - American Indian & Alaska Native 131 0.37
Non-Hispanic - American Indian & Alaska Native 87 0.24
Non-Hispanic - Some Other Race Alone 42 0.12
Hispanic - Black Alone 11 0.03
Hispanic - Asian Alone 5 0.01
Non-Hispanic - Native Hawaiian & Pac. Islander 5 0.01
Hispanic - Native Hawaiian & Pac. Islander 0 0.00