Clinton County, Iowa
Located in Iowa, Clinton County has a population of 46,268 residents and a median age of 42.4 years, making it the #1,071 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.2%. The median home value is $160,600, and the median household income is $66,981, which is 11% below the national median.
Demographics
Clinton County has a population of 46,268, making it the #1,071 most populous county in the US. The median age is 42.4 years, which is 9.0% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Clinton County is $66,981, ranking #1,436 out of 3,222 counties — 10.9% below the national median. The poverty rate is 13.2% and unemployment stands at 3.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Clinton County is $160,600 (-43.0% vs national). Renters pay a median of $850/mo and the homeownership rate is 74.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Clinton County, 22.4% of adults age 25+ hold a bachelor's degree or higher, which is 33.6% below the national average, ranking #1,595 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Clinton County is 75.9 years. 16.5% of adults report poor or fair health and 4.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.0% of adults in Clinton County smoke , 40.9% are obese , and 24.8% report excessive drinking. The drug overdose death rate is 26.6 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Clinton County is 3.1 per 100,000 and the suicide rate is 21.6 per 100,000. Motor vehicle deaths occur at a rate of 15.3 per 100,000.
Suicide Rate Trend
Families & Children
18.0% of children in Clinton County live in poverty . The teen birth rate is 20.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Clinton County is 69.0%. The mean commute time is 23.7 min, which is 14.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Clinton County voted Republican with a margin of 18.8%. The vote was 39.8% Dem / 58.6% Rep. Compared to 2020, the margin shifted 8.5 toward Republicans .
Vote Share Over Time
About Clinton County, Iowa
Clinton County, Iowa has a total population of 46,268, making it the 1,071st most populous county in the United States. The median age in Clinton County is 42.4 years, which is 9.0% above the national median of 38.9 years.
The median household income in Clinton County is $66,981, which ranks #1,436 of 3,222 counties nationwide. This is 10.9% below the national median of $75,149. The poverty rate is 13.2%, higher than the national rate of 12.6%. The unemployment rate stands at 3.4%.
The median home value in Clinton County is $160,600, 43.0% below the national median. Renters in Clinton County pay a median gross rent of $850 per month. The homeownership rate is 74.5%, compared to the national rate of 64.4%.
In Clinton County, 22.4% of residents aged 25 and older hold a bachelor's degree or higher, 33.6% below the national average of 33.7%. Health insurance coverage stands at 94.9% of the population. The average commute time for workers is 23.7 min.
Clinton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.0% of the population, followed by Hispanic or Latino (3.6%) and Two or More Races (3.4%).
All data for Clinton County, Iowa comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.