Dubuque County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 8th-largest in Iowa
The population of Dubuque County, Iowa is 98,948 as of the 2023 American Community Survey, making it the 8th-largest county in Iowa. The median household income is $75,919, the median home value is $226,100, and the median age is 38.8.
The population of Dubuque County has grown 5.7% since 2010 (93,933 → 99,242), a +0.39% annualized rate.
98,948
Population
+0.39%
Annual growth
163
People / sq mi
$75,919
Median Income
$226,100
Median Home Value
Dubuque County covers 608 sq mi of land at 162.7 people per square mile.
About Dubuque County, IA
Dubuque County is a county in Iowa with a population of 98,948. It ranks #8 among counties in Iowa by population. The median age is 38.8, in line with the national median. The population is 49.7% male and 50.3% female.
The median household income in Dubuque County is $75,919, near the US median of $74,580. 5.3% of residents live below the federal poverty level. Home values sit at a median of $226,100, with monthly rent averaging $944. The homeownership rate of 73.2% is higher than the national rate of 64.8%.
Educational attainment in Dubuque County reflects 32.9% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 11.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 17.1 minutes each way.
Dubuque County Population History (2010-2024)
The county of Dubuque County had a population of 93,933 in 2010 and 99,242 in 2024, a 5.7% growth over 14 years. The peak was 99,310 in 2020. Average annual growth rate: 0.40%.
99,242
Population (2024)
93,933
Population (2010)
99,310
Peak (2020)
0.40%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 93,933 |
| 2011 | 94,656 |
| 2012 | 95,183 |
| 2013 | 95,990 |
| 2014 | 96,544 |
| 2015 | 96,934 |
| 2016 | 96,819 |
| 2017 | 97,162 |
| 2018 | 96,961 |
| 2019 | 97,432 |
| 2020 | 99,310 |
| 2021 | 98,863 |
| 2022 | 98,748 |
| 2023 | 98,988 |
| 2024 | 99,242 |
Race & Ethnicity
| White | 89.9% |
| Black or African American | 2.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Age & Sex
38.8
Median Age
50.3%
Female
49.7%
Male
18.8%
Age 65+
Age Distribution
Children (under 15): 18.6% · Seniors (65+): 18.8%
Income & Poverty
| Median household income | $75,919+$2,772 vs state |
| Mean household income | $98,871 |
| Per-capita income | $40,624 |
| Poverty rate | 5.3%-1.6% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 64.9% |
Top Industries by Employment
The largest employment sector in Dubuque County is professional & business services, accounting for 25.3% of workers.
How residents commute
1.0%
Drive alone
2.5%
Carpool
78.4%
Public transit
11.0%
Work from home
17.1 min
Avg commute
Housing
$226,100+$30,200 vs state
Median home value
$944
Median rent
73.2%
Homeownership rate
43,003
Total housing units
94.4%
Occupied
5.6%
Vacant
26.8%
Renter-occupied
Social & access
96.5%
With health insurance
94.3%
With broadband internet
22.2%
Foreign-born
6.2%
Veterans (18+)
10.9%
With a disability
95.4%
Speak language other than English at home
Education
94.1%
High School+
32.9%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Dubuque County, Iowa has a population of 98,948 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 8th-largest county in Iowa. Population density is 163 people per square mile.
The population of Dubuque County has grown 5.7% since 2010 (93,933 → 99,242), a +0.39% annualized rate.
The median household income in Dubuque County, Iowa is $75,919, with mean (average) household income of $98,871 and per-capita income of $40,624. 5.3% of residents live below the federal poverty level.
In Dubuque County, the largest racial and ethnic groups are White (89.9%), Black or African American (2.9%), Hispanic or Latino (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Dubuque County, Iowa is 38.8 years. Residents are 50.3% female and 49.7% male.
The median home value in Dubuque County is $226,100 and median monthly rent is $944. 73.2% of occupied housing units are owner-occupied. The county has 43,003 total housing units, 5.6% of which are vacant.
The largest employment sector in Dubuque County, Iowa is professional, scientific, and management services, employing 25.3% of workers. The unemployment rate is 2.5%.
Des Moines is among the largest cities associated with Dubuque County, Iowa, with a population of 212,464.
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Statewide data for Iowa
Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.