Dubuque County Demographics

A map of Dubuque County's Population by Race

Dubuque County, Iowa had a population of 99,266 in 2020. It was 88.0% White, 4.1% Black, 1.0% Asian, 3.0% Hispanic, 1.2% Native American/Other, and 2.7% Multiracial. This map presents the population of Dubuque County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Dubuque County is the 8th most populous county of the 99 counties in Iowa.

Dubuque County's White Population

87,349 residents of Dubuque County identify as White, or 88.0%. This makes the White share of the population of Dubuque County slightly larger than the White share of the population of Iowa (82.7% White). Of the 99 counties in Iowa, Dubuque County is ranked #71 in terms of White residents as a share of the population.

Dubuque County is less White than neighboring Jones County (92% White), Jackson County (94.3% White), Grant County (93% White), Delaware County (95.5% White), and Clayton County (94.5% White).

Dubuque County's Black Population

4,035 residents of Dubuque County identify as Black, or 4.1%. This makes the Black share of the population of Dubuque County roughly similar to the Black share of the population of Iowa (4.1% Black). Of the 99 counties in Iowa, Dubuque County is ranked #10 in terms of Black residents as a share of the population.

Dubuque County is more Black than neighboring Jones County (2.1% Black), Jackson County (0.7% Black), Grant County (1.3% Black), Delaware County (0.7% Black), and Clayton County (0.9% Black).

Dubuque County's Asian Population

1,018 residents of Dubuque County identify as Asian, or 1.0%. This makes the Asian share of the population of Dubuque County roughly similar to the Asian share of the population of Iowa (2.4% Asian). Of the 99 counties in Iowa, Dubuque County is ranked #22 in terms of Asian residents as a share of the population.

Dubuque County is more Asian than neighboring Jones County (0.3% Asian), Jackson County (0.2% Asian), Grant County (0.8% Asian), Delaware County (0.2% Asian), and Clayton County (0.3% Asian).

Dubuque County's Hispanic Population

2,977 residents of Dubuque County identify as Hispanic, or 3.0%. This makes the Hispanic share of the population of Dubuque County roughly similar to the Hispanic share of the population of Iowa (6.8% Hispanic). Of the 99 counties in Iowa, Dubuque County is ranked #56 in terms of Hispanic residents as a share of the population.

Dubuque County is more Hispanic than neighboring Jones County (2.4% Hispanic), Jackson County (1.2% Hispanic), Grant County (2.4% Hispanic), Delaware County (1.4% Hispanic), and Clayton County (2% Hispanic).

Dubuque County's Native American/Other Population

1,199 residents of Dubuque County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.2%. This makes the Native American/Other share of the population of Dubuque County roughly similar to the Native American/Other share of the population of Iowa (0.7% Native American/Other). Of the 99 counties in Iowa, Dubuque County is ranked #7 in terms of Native American/Other residents as a share of the population.

Dubuque County is more Native American/Other than neighboring Jones County (0.6% Native American/Other), Grant County (0.3% Native American/Other), Delaware County (0.3% Native American/Other), and Clayton County (0.3% Native American/Other). Dubuque County is less Native American/Other than neighboring Jackson County (1.4% Native American/Other).

Dubuque County's Multiracial Population

2,688 residents of Dubuque County identify as Multiracial, or 2.7%. This makes the Multiracial share of the population of Dubuque County roughly similar to the Multiracial share of the population of Iowa (3.4% Multiracial). Of the 99 counties in Iowa, Dubuque County is ranked #36 in terms of Multiracial residents as a share of the population.

Dubuque County is more Multiracial than neighboring Jones County (2.6% Multiracial), Jackson County (2.2% Multiracial), Grant County (2.2% Multiracial), Delaware County (1.8% Multiracial), and Clayton County (1.9% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.