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

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 25,024 population of Plymouth County, Iowa comprised of 1,338 people who identified as Hispanic (5.35%), and 23,686 people who identified as Non-Hispanic (94.65%).

Race: The White Alone population was the largest racial group in Plymouth County, Iowa with a population of 24,041 (96.07%); Two Or More Races population was the second largest racial group with a population of 319 (1.27%); and Black or African American Alone was the third largest racial group with a population of 231 (0.92%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Plymouth County, Iowa in 2018, with a population of 22,910 (91.55%); the second largest ethnic group was White Alone - Hispanic with a population of 1,131 (4.52%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 271 (1.08%).

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

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

See this for other years:
Hispanics and Non Hispanics in Plymouth County, IA in 2018
Total Population:
Race in Plymouth County, IA in 2018
Total Population:
Ethnicity in Plymouth County, IA in 2018
Total Population:
Population By Race in Plymouth , IA in 2018
Race Population Percentage
Black or African American Alone 231 0.92%
White Alone 24,041 96.07%
American Indian and Alaska Native Alone 221 0.88%
Asian Alone 171 0.68%
Native Hawaiian And Pacific Islander Alone 41 0.16%
Two Or More Races 319 1.27%
Population By Ethnicity in Plymouth , IA in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 18 0.07%
White Alone - Hispanic 1,131 4.52%
American Indian and Alaska Native Alone - Hispanic 120 0.48%
Asian Alone - Hispanic 8 0.03%
Native Hawaiian And Pacific Islander Alone - Hispanic 13 0.05%
Two Or More Races - Hispanic 48 0.19%
Black or African American Alone - Non Hispanic 213 0.85%
White Alone - Non Hispanic 22,910 91.55%
American Indian and Alaska Native Alone - Non Hispanic 101 0.4%
Asian Alone - Non Hispanic 163 0.65%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 28 0.11%
Two Or More Races - Non Hispanic 271 1.08%