Population By Race and Ethnicity in O'Brien County, IA in 2011

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2011, the 14,217 population of O'Brien County, Iowa comprised of 558 people who identified as Hispanic (3.93%), and 13,659 people who identified as Non-Hispanic (96.08%).

Race: The White Alone population was the largest racial group in O'Brien County, Iowa with a population of 13,891 (97.71%); Black or African American Alone population was the second largest racial group with a population of 100 (0.7%); and Asian Alone was the third largest racial group with a population of 99 (0.7%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in O'Brien County, Iowa in 2011, with a population of 13,396 (94.23%); the second largest ethnic group was White Alone - Hispanic with a population of 495 (3.48%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 96 (0.68%).

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 2011
Total Population:
Race in O'Brien County, IA in 2011
Total Population:
Ethnicity in O'Brien County, IA in 2011
Total Population:
Population By Race in O'Brien , IA in 2011
Race Population Percentage
Black or African American Alone 100 0.7%
White Alone 13,891 97.71%
American Indian and Alaska Native Alone 27 0.19%
Asian Alone 99 0.7%
Native Hawaiian And Pacific Islander Alone 1 0.01%
Two Or More Races 99 0.7%
Population By Ethnicity in O'Brien , IA in 2011
Ethnicity Population Percentage
Black or African American Alone - Hispanic 40 0.28%
White Alone - Hispanic 495 3.48%
American Indian and Alaska Native Alone - Hispanic 9 0.06%
Asian Alone - Hispanic 3 0.02%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 11 0.08%
Black or African American Alone - Non Hispanic 60 0.42%
White Alone - Non Hispanic 13,396 94.23%
American Indian and Alaska Native Alone - Non Hispanic 18 0.13%
Asian Alone - Non Hispanic 96 0.68%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 1 0.01%
Two Or More Races - Non Hispanic 88 0.62%