Population By Race and Ethnicity in O'Brien County, IA in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 14,154 population of O'Brien County, Iowa comprised of 801 people who identified as Hispanic (5.66%), and 13,353 people who identified as Non-Hispanic (94.34%).

Race: The White Alone population was the largest racial group in O'Brien County, Iowa with a population of 13,627 (96.28%); Black or African American Alone population was the second largest racial group with a population of 207 (1.46%); and Two Or More Races was the third largest racial group with a population of 146 (1.03%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in O'Brien County, Iowa in 2020, with a population of 12,937 (91.4%); the second largest ethnic group was White Alone - Hispanic with a population of 690 (4.88%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 161 (1.14%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in O'Brien, Iowa.

You can find similar information for other Iowa counties, and for Iowa.

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Hispanics and Non Hispanics in O'Brien County, IA in 2020
Total Population:
Race in O'Brien County, IA in 2020
Total Population:
Ethnicity in O'Brien County, IA in 2020
Total Population:
Population By Race in O'Brien , IA in 2020
Race Population Percentage
Black or African American Alone 207 1.46%
White Alone 13,627 96.28%
American Indian and Alaska Native Alone 57 0.4%
Asian Alone 111 0.78%
Native Hawaiian And Pacific Islander Alone 6 0.04%
Two Or More Races 146 1.03%
Population By Ethnicity in O'Brien , IA in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 46 0.33%
White Alone - Hispanic 690 4.88%
American Indian and Alaska Native Alone - Hispanic 31 0.22%
Asian Alone - Hispanic 9 0.06%
Native Hawaiian And Pacific Islander Alone - Hispanic 2 0.01%
Two Or More Races - Hispanic 23 0.16%
Black or African American Alone - Non Hispanic 161 1.14%
White Alone - Non Hispanic 12,937 91.4%
American Indian and Alaska Native Alone - Non Hispanic 26 0.18%
Asian Alone - Non Hispanic 102 0.72%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 4 0.03%
Two Or More Races - Non Hispanic 123 0.87%