Population By Race and Ethnicity in Jefferson County, IA in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 18,102 population of Jefferson County, Iowa comprised of 582 people who identified as Hispanic (3.22%), and 17,520 people who identified as Non-Hispanic (96.79%).

Race: The White Alone population was the largest racial group in Jefferson County, Iowa with a population of 15,234 (84.16%); Asian Alone population was the second largest racial group with a population of 2,057 (11.36%); and Black or African American Alone was the third largest racial group with a population of 434 (2.4%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Jefferson County, Iowa in 2018, with a population of 14,740 (81.43%); the second largest ethnic group was Asian Alone - Non Hispanic with a population of 2,046 (11.3%); and the third largest ethnic group was White Alone - Hispanic with a population of 494 (2.73%).

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

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

See this for other years:
Hispanics and Non Hispanics in Jefferson County, IA in 2018
Total Population:
Race in Jefferson County, IA in 2018
Total Population:
Ethnicity in Jefferson County, IA in 2018
Total Population:
Population By Race in Jefferson , IA in 2018
Race Population Percentage
Black or African American Alone 434 2.4%
White Alone 15,234 84.16%
American Indian and Alaska Native Alone 59 0.33%
Asian Alone 2,057 11.36%
Native Hawaiian And Pacific Islander Alone 4 0.02%
Two Or More Races 314 1.74%
Population By Ethnicity in Jefferson , IA in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 29 0.16%
White Alone - Hispanic 494 2.73%
American Indian and Alaska Native Alone - Hispanic 14 0.08%
Asian Alone - Hispanic 11 0.06%
Native Hawaiian And Pacific Islander Alone - Hispanic 2 0.01%
Two Or More Races - Hispanic 32 0.18%
Black or African American Alone - Non Hispanic 405 2.24%
White Alone - Non Hispanic 14,740 81.43%
American Indian and Alaska Native Alone - Non Hispanic 45 0.25%
Asian Alone - Non Hispanic 2,046 11.3%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.01%
Two Or More Races - Non Hispanic 282 1.56%