Population By Race and Ethnicity in Waukesha County, WI in 2020

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2020, the 407,496 population of Waukesha County, Wisconsin comprised of 21,946 people who identified as Hispanic (5.39%), and 385,550 people who identified as Non-Hispanic (94.61%).

Race: The White Alone population was the largest racial group in Waukesha County, Wisconsin with a population of 375,239 (92.08%); Asian Alone population was the second largest racial group with a population of 16,503 (4.05%); and Black or African American Alone was the third largest racial group with a population of 7,342 (1.8%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Waukesha County, Wisconsin in 2020, with a population of 355,274 (87.19%); the second largest ethnic group was White Alone - Hispanic with a population of 19,965 (4.9%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 16,349 (4.01%).

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 2020
Total Population:
Race in Waukesha County, WI in 2020
Total Population:
Ethnicity in Waukesha County, WI in 2020
Total Population:
Population By Race in Waukesha , WI in 2020
Race Population Percentage
Black or African American Alone 7,342 1.8%
White Alone 375,239 92.08%
American Indian and Alaska Native Alone 1,352 0.33%
Asian Alone 16,503 4.05%
Native Hawaiian And Pacific Islander Alone 235 0.06%
Two Or More Races 6,825 1.68%
Population By Ethnicity in Waukesha , WI in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 546 0.13%
White Alone - Hispanic 19,965 4.9%
American Indian and Alaska Native Alone - Hispanic 425 0.1%
Asian Alone - Hispanic 154 0.04%
Native Hawaiian And Pacific Islander Alone - Hispanic 68 0.02%
Two Or More Races - Hispanic 788 0.19%
Black or African American Alone - Non Hispanic 6,796 1.67%
White Alone - Non Hispanic 355,274 87.19%
American Indian and Alaska Native Alone - Non Hispanic 927 0.23%
Asian Alone - Non Hispanic 16,349 4.01%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 167 0.04%
Two Or More Races - Non Hispanic 6,037 1.48%