Warren County, Iowa Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Warren County, IA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around averageHealthier than 93% of counties in Iowa
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B
Income Around averageAmong the top 3 wealthiest counties in Iowa
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C
Education Below averageBetter educated than 90% of counties in Iowa
Source: Map AI Methodology
Population: density and quick facts
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Population | 54,398 | 3,204,793 | 337,468,954 |
| Population density (per sq mi) | 95.0 | 57.0 | 86.4 |
| Population growth (%/yr) | 1.53% | 0.41% | 0.59% |
| Median age | 36.8 | 36.8 | 37.3 |
| Households | 20,679 | 1,308,457 | 130,235,071 |
Population in Warren County grew by 23.1% from 2009 to 2024, reaching 54,398 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Warren County is Gen Z, aged 13–28, at 21.2% of residents. That is 1.0 points below Iowa as a whole.
- Gen Z 13–28 11,549 21.2% -1.0 pts
- Millennials 29–44 11,479 21.1% +0.6 pts
- Gen X 45–60 10,722 19.7% +0.8 pts
- Boomers 61–79 8,743 16.1% -1.6 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Iowa, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.2% of the people living in Warren County and men 49.8%.
- Women 50.2% Iowa 50.0%
- Men 49.8% Iowa 50.0%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Warren County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Warren County has a the economy index of B, which means it is quite prosperous.
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Median household income | $95,575 | $75,133 | $80,455 |
| Income growth (%/yr) | 4.53% | 3.99% | 4.80% |
| Unemployment rate | 3.4% | 3.6% | 5.2% |
The median household income in Warren County is about 27% higher than in Iowa.
Housing
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Median home price | $310,000 | $153,425 | $248,835 |
| Median rent | $972 | $971 | $1,407 |
| Homeownership rate | 82.3% | 71.7% | 65.2% |
The median home price in Warren County is about 26.6 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $972 per month for that long.
Commute Time & Mobility
Commuters in Warren County spend about 46 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 190 hours, about 7.9 full days, spent commuting.
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 22.9 | 17.0 | 22.4 |
| Round-trip commute (min) | 45.7 | 33.9 | 44.8 |
| Yearly time spent (hours) | 190 | 141 | 187 |
| Estimated yearly cost | $5,903 | $4,382 | $5,790 |
| Work from home | 15.3% | 11.3% | 15.0% |
| Highway traffic (vehicles/day) | 7,047 | 4,993 | 8,813 |
| Local road traffic (vehicles/day) | 1,456 | 606 | 1,355 |
Fastest commutes among counties in
Iowa:
Sioux County (10.1 min), Union County (10.4 min), Cass County (10.6 min).
Slowest:
Monroe County (30.4 min), Madison County (30.1 min), Mills County (26.7 min).
The average commute time in Warren County is 23 minutes, longer than the 17 minutes in Iowa.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Warren County has a education index of C, which means it is somewhat educated.
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 29.5% | 27.9% | 31.6% |
| Average household size | 2.60 | 2.37 | 2.53 |
Highest education index among counties in
Iowa:
Johnson County (0.4), Dallas County (0.4), Story County (0.4).
Lowest:
Crawford County (0.2), Wayne County (0.2), Louisa County (0.2).
Health
Warren County has a health index of B, which means it is quite healthy.
| Metric | Warren County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.7 | 79.2 | 78.3 |
| Self-rated poor health | 10.8% | 13.6% | 16.3% |
| Smokers | 15.3% | 17.6% | 19.0% |
Highest health index among counties in
Iowa:
Johnson County (0.8), Story County (0.8), Winneshiek County (0.8).
Lowest:
Davis County (0.8), Wayne County (0.8), Appanoose County (0.8).
Warren County, IA Compared With Nearby Counties
How Warren County, IA compares with the 2 counties closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Warren County, IA | 54,398 | $95,575 #1/3 | $310,000 #1/3 | 22.9 min #3/3 |
| Polk County, IA | 502,972 | $83,877 | $195,018 | 18.5 min |
| Marion County, IA | 33,642 | $79,418 | $184,905 | 15.5 min |
Frequently Asked Questions
Common questions about Warren County, Iowa.
How big is Warren County, Iowa by population?
About 54,398 people live in Warren County, Iowa, in 20,679 households of 2.6 people on average. The median age is 36.8, close to the U.S. median of 37.3.
Is Warren County, Iowa urban or rural?
Averaged over its land area, Warren County, Iowa has 95 people per square mile, a density typical of rural areas. That is close to the U.S. average of 86.
Can a typical household afford a home in Warren County, Iowa?
The median home costs 3.2 times the median household income ($310,000 against $95,575), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $972 a month takes about 12% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Warren County, Iowa?
Unemployment in Warren County, Iowa is only 3.4%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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