Clayton County, Iowa
Located in Iowa, Clayton County has a population of 17,013 residents and a median age of 46.4 years, making it the #2,035 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.9%. The median home value is $168,500, and the median household income is $67,242, which is 11% below the national median.
Demographics
Clayton County has a population of 17,013, making it the #2,035 most populous county in the US. The median age is 46.4 years, which is 19.3% 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 Clayton County is $67,242, ranking #1,409 out of 3,222 counties — 10.5% below the national median. The poverty rate is 10.9% and unemployment stands at 2.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Clayton County is $168,500 (-40.2% vs national). Renters pay a median of $790/mo and the homeownership rate is 78.0%.
Median Home Value Trend
Rankings →Household Type
Education
In Clayton County, 14.5% of adults age 25+ hold a bachelor's degree or higher, which is 57.0% below the national average, ranking #2,888 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Clayton County is 79.1 years. 15.5% of adults report poor or fair health and 6.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.9% of adults in Clayton County smoke , 40.6% are obese , and 24.5% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 18.4 per 100,000. Motor vehicle deaths occur at a rate of 17.3 per 100,000.
Suicide Rate Trend
Families & Children
12.8% of children in Clayton County live in poverty . The teen birth rate is 8.6 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Clayton County is 70.5%. The mean commute time is 24.7 min, which is 10.6% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Clayton County voted Republican with a margin of 34.5%. The vote was 32.2% Dem / 66.7% Rep. Compared to 2020, the margin shifted 5.7 toward Republicans .
Vote Share Over Time
About Clayton County, Iowa
Clayton County, Iowa has a total population of 17,013, making it the 2,035th most populous county in the United States. The median age in Clayton County is 46.4 years, which is 19.3% above the national median of 38.9 years.
The median household income in Clayton County is $67,242, which ranks #1,409 of 3,222 counties nationwide. This is 10.5% below the national median of $75,149. The poverty rate is 10.9%, lower than the national rate of 12.6%. The unemployment rate stands at 2.5%.
The median home value in Clayton County is $168,500, 40.2% below the national median. Renters in Clayton County pay a median gross rent of $790 per month. The homeownership rate is 78.0%, compared to the national rate of 64.4%.
In Clayton County, 14.5% of residents aged 25 and older hold a bachelor's degree or higher, 57.0% below the national average of 33.7%. Health insurance coverage stands at 91.6% of the population. The average commute time for workers is 24.7 min.
Clayton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 95.0% of the population, followed by Hispanic or Latino (2.3%) and Two or More Races (1.7%).
All data for Clayton 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.