Warren County, Iowa
Located in Iowa, Warren County has a population of 54,409 residents and a median age of 38.8 years, making it the #956 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 5.1%. The median home value is $269,600, and the median household income is $94,588, which is 26% above the national median.
Demographics
Warren County has a population of 54,409, making it the #956 most populous county in the US. The median age is 38.8 years, which is 0.3% below 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 Warren County is $94,588, ranking #228 out of 3,222 counties — 25.9% above the national median. The poverty rate is 5.1% and unemployment stands at 3.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Warren County is $269,600 (-4.4% vs national). Renters pay a median of $973/mo and the homeownership rate is 82.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Warren County, 33.3% of adults age 25+ hold a bachelor's degree or higher, which is 1.2% below the national average, ranking #558 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Warren County is 78.4 years. 15.3% of adults report poor or fair health and 3.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.9% of adults in Warren County smoke , 42.1% are obese , and 25.0% report excessive drinking. The drug overdose death rate is 15.0 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 18.2 per 100,000. Motor vehicle deaths occur at a rate of 10.8 per 100,000.
Suicide Rate Trend
Families & Children
5.7% of children in Warren County live in poverty . The teen birth rate is 6.5 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Warren County is 81.5%. The mean commute time is 26.5 min, which is 4.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Warren County voted Republican with a margin of 20.8%. The vote was 38.9% Dem / 59.7% Rep. Compared to 2020, the margin shifted 4.0 toward Republicans .
Vote Share Over Time
About Warren County, Iowa
Warren County, Iowa has a total population of 54,409, making it the 956th most populous county in the United States. The median age in Warren County is 38.8 years, which is 0.3% below the national median of 38.9 years.
The median household income in Warren County is $94,588, which ranks #228 of 3,222 counties nationwide. This is 25.9% above the national median of $75,149. The poverty rate is 5.1%, lower than the national rate of 12.6%. The unemployment rate stands at 3.4%.
The median home value in Warren County is $269,600, 4.4% below the national median. Renters in Warren County pay a median gross rent of $973 per month. The homeownership rate is 82.3%, compared to the national rate of 64.4%.
In Warren County, 33.3% of residents aged 25 and older hold a bachelor's degree or higher, 1.2% below the national average of 33.7%. Health insurance coverage stands at 98.0% of the population. The average commute time for workers is 26.5 min.
Warren County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.9% of the population, followed by Hispanic or Latino (3.7%) and Two or More Races (2.8%).
All data for Warren 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.