Clinton County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 12th-largest in Iowa
The population of Clinton County, Iowa is 46,383 as of the 2023 American Community Survey, making it the 12th-largest county in Iowa. The median household income is $65,177, the median home value is $153,800, and the median age is 42.5.
The population of Clinton County has declined 6.3% since 2010 (49,091 → 46,015), a -0.46% annualized rate.
46,383
Population
-0.46%
Annual growth
67
People / sq mi
$65,177
Median Income
$153,800
Median Home Value
Clinton County covers 695 sq mi of land at 66.7 people per square mile.
About Clinton County, IA
Clinton County is a county in Iowa with a population of 46,383. It ranks #12 among counties in Iowa by population. The median age is 42.5, older than the national median. The population is 49.3% male and 50.7% female.
The median household income in Clinton County is $65,177, below the US median of $74,580. 9.2% of residents live below the federal poverty level. Home values sit at a median of $153,800, with monthly rent averaging $825. The homeownership rate of 73.1% is higher than the national rate of 64.8%.
Educational attainment in Clinton County reflects 22.1% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.1 minutes each way.
Clinton County Population History (2010-2024)
The county of Clinton County had a population of 49,091 in 2010 and 46,015 in 2024, a -6.3% growth over 14 years. The peak was 49,105 in 2011. Average annual growth rate: -0.46%.
46,015
Population (2024)
49,091
Population (2010)
49,105
Peak (2011)
-0.46%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 49,091 |
| 2011 | 49,105 |
| 2012 | 48,711 |
| 2013 | 48,297 |
| 2014 | 47,921 |
| 2015 | 47,593 |
| 2016 | 47,285 |
| 2017 | 46,926 |
| 2018 | 46,506 |
| 2019 | 46,559 |
| 2020 | 46,432 |
| 2021 | 46,491 |
| 2022 | 46,268 |
| 2023 | 46,134 |
| 2024 | 46,015 |
Race & Ethnicity
| White | 90.3% |
| Black or African American | 2.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
42.5
Median Age
50.7%
Female
49.3%
Male
20.0%
Age 65+
Age Distribution
Children (under 15): 18.9% · Seniors (65+): 20.0%
Income & Poverty
| Median household income | $65,177$-7,970 vs state |
| Mean household income | $85,010 |
| Per-capita income | $36,093 |
| Poverty rate | 9.2%+2.3% vs state |
| Unemployment rate | 2.3% |
| Employment-to-population | 58.6% |
Top Industries by Employment
The largest employment sector in Clinton County is professional & business services, accounting for 22.3% of workers.
How residents commute
0.4%
Drive alone
2.0%
Carpool
82.6%
Public transit
6.0%
Work from home
21.1 min
Avg commute
Housing
$153,800$-42,100 vs state
Median home value
$825
Median rent
73.1%
Homeownership rate
21,590
Total housing units
90.0%
Occupied
10.0%
Vacant
26.9%
Renter-occupied
Social & access
95.0%
With health insurance
89.8%
With broadband internet
23.9%
Foreign-born
8.8%
Veterans (18+)
13.5%
With a disability
97.1%
Speak language other than English at home
Education
92.7%
High School+
22.1%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Clinton County, Iowa has a population of 46,383 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 12th-largest county in Iowa. Population density is 67 people per square mile.
The population of Clinton County has declined 6.3% since 2010 (49,091 → 46,015), a -0.46% annualized rate.
The median household income in Clinton County, Iowa is $65,177, with mean (average) household income of $85,010 and per-capita income of $36,093. 9.2% of residents live below the federal poverty level.
In Clinton County, the largest racial and ethnic groups are White (90.3%), Black or African American (2.9%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Clinton County, Iowa is 42.5 years. Residents are 50.7% female and 49.3% male.
The median home value in Clinton County is $153,800 and median monthly rent is $825. 73.1% of occupied housing units are owner-occupied. The county has 21,590 total housing units, 10.0% of which are vacant.
The largest employment sector in Clinton County, Iowa is professional, scientific, and management services, employing 22.3% of workers. The unemployment rate is 2.3%.
Des Moines is among the largest cities associated with Clinton 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.