Benton County, Iowa
Located in Iowa, Benton County has a population of 25,724 residents and a median age of 43.1 years, making it the #1,627 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.4%. The median home value is $208,200, and the median household income is $86,962, which is 16% above the national median.
Demographics
Benton County has a population of 25,724, making it the #1,627 most populous county in the US. The median age is 43.1 years, which is 10.8% 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 Benton County is $86,962, ranking #373 out of 3,222 counties — 15.7% above the national median. The poverty rate is 7.4% and unemployment stands at 2.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Benton County is $208,200 (-26.1% vs national). Renters pay a median of $826/mo and the homeownership rate is 85.0%.
Median Home Value Trend
Rankings →Household Type
Education
In Benton County, 25.6% of adults age 25+ hold a bachelor's degree or higher, which is 24.2% below the national average, ranking #1,165 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Benton County is 79.2 years. 15.6% of adults report poor or fair health and 4.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.6% of adults in Benton County smoke , 41.7% are obese , and 27.0% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 23.0 per 100,000. Motor vehicle deaths occur at a rate of 20.6 per 100,000.
Suicide Rate Trend
Families & Children
9.1% of children in Benton County live in poverty . The teen birth rate is 10.9 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Benton County is 75.1%. The mean commute time is 27.3 min, which is 1.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Benton County voted Republican with a margin of 33.2%. The vote was 32.8% Dem / 66% Rep. Compared to 2020, the margin shifted 5.6 toward Republicans .
Vote Share Over Time
About Benton County, Iowa
Benton County, Iowa has a total population of 25,724, making it the 1,627th most populous county in the United States. The median age in Benton County is 43.1 years, which is 10.8% above the national median of 38.9 years.
The median household income in Benton County is $86,962, which ranks #373 of 3,222 counties nationwide. This is 15.7% above the national median of $75,149. The poverty rate is 7.4%, lower than the national rate of 12.6%. The unemployment rate stands at 2.0%.
The median home value in Benton County is $208,200, 26.1% below the national median. Renters in Benton County pay a median gross rent of $826 per month. The homeownership rate is 85.0%, compared to the national rate of 64.4%.
In Benton County, 25.6% of residents aged 25 and older hold a bachelor's degree or higher, 24.2% below the national average of 33.7%. Health insurance coverage stands at 97.0% of the population. The average commute time for workers is 27.3 min.
Benton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 94.4% of the population, followed by Two or More Races (2.8%) and Hispanic or Latino (2.0%).
All data for Benton 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.