Mills County, Iowa
Located in Iowa, Mills County has a population of 14,568 residents and a median age of 42.1 years, making it the #2,181 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 8.2%. The median home value is $237,800, and the median household income is $90,753, which is 21% above the national median.
Demographics
Mills County has a population of 14,568, making it the #2,181 most populous county in the US. The median age is 42.1 years, which is 8.2% 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 Mills County is $90,753, ranking #286 out of 3,222 counties — 20.8% above the national median. The poverty rate is 8.2% and unemployment stands at 1.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Mills County is $237,800 (-15.6% vs national). Renters pay a median of $959/mo and the homeownership rate is 83.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Mills County, 31.0% of adults age 25+ hold a bachelor's degree or higher, which is 8.1% below the national average, ranking #704 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Mills County is 76.4 years. 15.7% of adults report poor or fair health and 4.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.2% of adults in Mills County smoke , 40.7% are obese , and 25.5% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 14.6 per 100,000. Motor vehicle deaths occur at a rate of 16.4 per 100,000.
Suicide Rate Trend
Families & Children
10.1% of children in Mills County live in poverty . The teen birth rate is 10.4 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Mills County is 72.5%. The mean commute time is 28.1 min, which is 1.7% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Mills County voted Republican with a margin of 39.1%. The vote was 29.9% Dem / 69% Rep. Compared to 2020, the margin shifted 1.9 toward Republicans .
Vote Share Over Time
About Mills County, Iowa
Mills County, Iowa has a total population of 14,568, making it the 2,181st most populous county in the United States. The median age in Mills County is 42.1 years, which is 8.2% above the national median of 38.9 years.
The median household income in Mills County is $90,753, which ranks #286 of 3,222 counties nationwide. This is 20.8% above the national median of $75,149. The poverty rate is 8.2%, lower than the national rate of 12.6%. The unemployment rate stands at 1.9%.
The median home value in Mills County is $237,800, 15.6% below the national median. Renters in Mills County pay a median gross rent of $959 per month. The homeownership rate is 83.5%, compared to the national rate of 64.4%.
In Mills County, 31.0% of residents aged 25 and older hold a bachelor's degree or higher, 8.1% below the national average of 33.7%. Health insurance coverage stands at 97.3% of the population. The average commute time for workers is 28.1 min.
Mills County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.7% of the population, followed by Hispanic or Latino (3.9%) and Two or More Races (2.3%).
All data for Mills 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.