Dubuque County's 2026 population is estimated at 99,750, reflecting a 0.26% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dubuque County is the 9th largest county in Iowa. The 2010 population was 93,933 and has grown 6.19% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.1 years
Female: 40.1 years
Male: 37.7 years
There are 76,713 adults, (19,152 of whom are seniors) in Dubuque County.
Female: 49,882 (50.4%)
Male: 49,148 (49.6%)
The racial composition of Dubuque County includes 88.91% White, and smaller percentages for Black or African American, Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 88,050 | 88.91% |
| Two or more races | 4,977 | 5.03% |
| Black or African American | 2,932 | 2.96% |
| Asian | 1,354 | 1.37% |
| Other race | 876 | 0.88% |
| Native Hawaiian or Pacific Islander | 802 | 0.81% |
| Native American | 39 | 0.04% |
Dubuque County 's average per capita income is $51,814. Household income levels show a median of $77,630. The poverty rate stands at 9.65%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $113,802 | $138,153 |
| Families | $101,913 | $124,473 |
| Households | $77,630 | $100,177 |
| Non Families | $42,242 | $56,494 |
Average Income
Median Household Income
Poverty Rate
