Population By Race and Ethnicity in Dubuque, IA in 2018

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2018, the 96,961 population of Dubuque County, Iowa comprised of 2,429 people who identified as Hispanic (2.51%), and 94,532 people who identified as Non-Hispanic (97.5%).

Race: The White Alone population was the largest racial group in Dubuque County, Iowa with a population of 89,762 (92.58%); Black or African American Alone population was the second largest racial group with a population of 3,461 (3.57%); and Two Or More Races was the third largest racial group with a population of 1,606 (1.66%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Dubuque County, Iowa in 2018, with a population of 87,711 (90.46%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 3,355 (3.46%); and the third largest ethnic group was White Alone - Hispanic with a population of 2,051 (2.12%).

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, IA in 2018
Total Population:
Race in Dubuque, IA in 2018
Total Population:
Ethnicity in Dubuque, IA in 2018
Total Population:
Population By Race in Dubuque , IA in 2018
Race Population Percentage
Black or African American Alone 3,461 3.57%
White Alone 89,762 92.58%
American Indian and Alaska Native Alone 285 0.29%
Asian Alone 1,296 1.34%
Native Hawaiian And Pacific Islander Alone 551 0.57%
Two Or More Races 1,606 1.66%
Population By Ethnicity in Dubuque , IA in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 106 0.11%
White Alone - Hispanic 2,051 2.12%
American Indian and Alaska Native Alone - Hispanic 106 0.11%
Asian Alone - Hispanic 37 0.04%
Native Hawaiian And Pacific Islander Alone - Hispanic 13 0.01%
Two Or More Races - Hispanic 116 0.12%
Black or African American Alone - Non Hispanic 3,355 3.46%
White Alone - Non Hispanic 87,711 90.46%
American Indian and Alaska Native Alone - Non Hispanic 179 0.19%
Asian Alone - Non Hispanic 1,259 1.3%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 538 0.56%
Two Or More Races - Non Hispanic 1,490 1.54%