Population By Race and Ethnicity in Waukesha County, WI in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 402,705 population of Waukesha County, Wisconsin comprised of 19,626 people who identified as Hispanic (4.87%), and 383,079 people who identified as Non-Hispanic (95.13%).

Race: The White Alone population was the largest racial group in Waukesha County, Wisconsin with a population of 372,586 (92.52%); Asian Alone population was the second largest racial group with a population of 15,509 (3.85%); and Black or African American Alone was the third largest racial group with a population of 6,917 (1.72%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Waukesha County, Wisconsin in 2018, with a population of 354,674 (88.07%); the second largest ethnic group was White Alone - Hispanic with a population of 17,912 (4.45%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 15,382 (3.82%).

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

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

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Hispanics and Non Hispanics in Waukesha County, WI in 2018
Total Population:
Race in Waukesha County, WI in 2018
Total Population:
Ethnicity in Waukesha County, WI in 2018
Total Population:
Population By Race in Waukesha , WI in 2018
Race Population Percentage
Black or African American Alone 6,917 1.72%
White Alone 372,586 92.52%
American Indian and Alaska Native Alone 1,292 0.32%
Asian Alone 15,509 3.85%
Native Hawaiian And Pacific Islander Alone 226 0.06%
Two Or More Races 6,175 1.53%
Population By Ethnicity in Waukesha , WI in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 471 0.12%
White Alone - Hispanic 17,912 4.45%
American Indian and Alaska Native Alone - Hispanic 378 0.09%
Asian Alone - Hispanic 127 0.03%
Native Hawaiian And Pacific Islander Alone - Hispanic 69 0.02%
Two Or More Races - Hispanic 669 0.17%
Black or African American Alone - Non Hispanic 6,446 1.6%
White Alone - Non Hispanic 354,674 88.07%
American Indian and Alaska Native Alone - Non Hispanic 914 0.23%
Asian Alone - Non Hispanic 15,382 3.82%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 157 0.04%
Two Or More Races - Non Hispanic 5,506 1.37%