Population By Race and Ethnicity in O'Brien County, IA in 2019

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2019, the 13,796 population of O'Brien County, Iowa comprised of 733 people who identified as Hispanic (5.31%), and 13,063 people who identified as Non-Hispanic (94.69%).

Race: The White Alone population was the largest racial group in O'Brien County, Iowa with a population of 13,283 (96.28%); Black or African American Alone population was the second largest racial group with a population of 206 (1.49%); and Two Or More Races was the third largest racial group with a population of 145 (1.05%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in O'Brien County, Iowa in 2019, with a population of 12,654 (91.72%); the second largest ethnic group was White Alone - Hispanic with a population of 629 (4.56%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 158 (1.15%).

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 2019
Total Population:
Race in O'Brien County, IA in 2019
Total Population:
Ethnicity in O'Brien County, IA in 2019
Total Population:
Population By Race in O'Brien , IA in 2019
Race Population Percentage
Black or African American Alone 206 1.49%
White Alone 13,283 96.28%
American Indian and Alaska Native Alone 54 0.39%
Asian Alone 105 0.76%
Native Hawaiian And Pacific Islander Alone 3 0.02%
Two Or More Races 145 1.05%
Population By Ethnicity in O'Brien , IA in 2019
Ethnicity Population Percentage
Black or African American Alone - Hispanic 48 0.35%
White Alone - Hispanic 629 4.56%
American Indian and Alaska Native Alone - Hispanic 29 0.21%
Asian Alone - Hispanic 5 0.04%
Native Hawaiian And Pacific Islander Alone - Hispanic 1 0.01%
Two Or More Races - Hispanic 21 0.15%
Black or African American Alone - Non Hispanic 158 1.15%
White Alone - Non Hispanic 12,654 91.72%
American Indian and Alaska Native Alone - Non Hispanic 25 0.18%
Asian Alone - Non Hispanic 100 0.73%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.01%
Two Or More Races - Non Hispanic 124 0.9%