Population By Race and Ethnicity in Dubuque County, IA in 2020

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2020, the 99,308 population of Dubuque County, Iowa comprised of 2,991 people who identified as Hispanic (3.01%), and 96,317 people who identified as Non-Hispanic (96.99%).

Race: The White Alone population was the largest racial group in Dubuque County, Iowa with a population of 91,465 (92.1%); Black or African American Alone population was the second largest racial group with a population of 3,767 (3.79%); and Two Or More Races was the third largest racial group with a population of 1,775 (1.79%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Dubuque County, Iowa in 2020, with a population of 88,933 (89.55%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 3,611 (3.64%); and the third largest ethnic group was White Alone - Hispanic with a population of 2,532 (2.55%).

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

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

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Hispanics and Non Hispanics in Dubuque County, IA in 2020
Total Population:
Race in Dubuque County, IA in 2020
Total Population:
Ethnicity in Dubuque County, IA in 2020
Total Population:
Population By Race in Dubuque , IA in 2020
Race Population Percentage
Black or African American Alone 3,767 3.79%
White Alone 91,465 92.1%
American Indian and Alaska Native Alone 303 0.31%
Asian Alone 1,324 1.33%
Native Hawaiian And Pacific Islander Alone 674 0.68%
Two Or More Races 1,775 1.79%
Population By Ethnicity in Dubuque , IA in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 156 0.16%
White Alone - Hispanic 2,532 2.55%
American Indian and Alaska Native Alone - Hispanic 121 0.12%
Asian Alone - Hispanic 48 0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic 14 0.01%
Two Or More Races - Hispanic 120 0.12%
Black or African American Alone - Non Hispanic 3,611 3.64%
White Alone - Non Hispanic 88,933 89.55%
American Indian and Alaska Native Alone - Non Hispanic 182 0.18%
Asian Alone - Non Hispanic 1,276 1.29%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 660 0.67%
Two Or More Races - Non Hispanic 1,655 1.67%