Warren County, Iowa Demographics 2026

Name: Warren County, Iowa Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Warren County, Iowa has a population of 54,409, the 11th most populous county in Iowa. The median household income is $94,588 and the median home value is $269,600. The poverty rate is 5.1%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Warren County Quick Facts

Population 54,409

Median Household Income $94,588

Median Home Value $269,600

Poverty Rate 5.1%

Unemployment Rate 3.4%

Median Age 38.8 years

Homeownership Rate 82.3%

Affordability Ratio 2.9x

Bachelor's Degree+ 33.3%

High School Graduation 96.7%

Cities/Places 12

Population 54,409 11th of 99

Median Income $94,588 26% higher than state

Poverty Rate 5.1%

Unemployment 3.4%

How Warren County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	53,484	54,409	+1.7%
Median household income	$92,990	$94,588	+1.7%
Median home value	$252,800	$269,600	+6.6%

Median Household Income

Warren

$94,588

$75,059

National

$80,734

Median Home Value

Warren

$269,600

$208,000

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 8.8%

$25K-$50K 15.3%

$50K-$100K 28.3%

$100K+ 47.7%

Detailed income brackets

Under $10K

3.6%

$10K-$15K

1.6%

$15K-$20K

1.8%

$20K-$25K

1.8%

$25K-$30K

2.8%

$30K-$35K

3.1%

$35K-$40K

2.9%

$40K-$45K

3.6%

$45K-$50K

2.8%

$50K-$60K

6.1%

$60K-$75K

9.0%

$75K-$100K

13.2%

$100K-$125K

14.4%

$125K-$150K

9.3%

$150K-$200K

13.0%

$200K+

10.9%

Employment

3.4% Unemployment Rate State: 3.6%|National: 5.2%

68.7% Labor Force Participation

Housing Overview

Owner 82.3%

Renter 17.7%

Affordability Index Very Affordable

2.9x home value to income ratio

Median gross rent $973/mo 12.3% of median household income annually

People & Demographics

Age Distribution

Under 18

24.4%

18-34

20.6%

35-54

25.8%

55-74

22.3%

75+

7.0%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 31 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Warren County

City	Population	Median Income	Poverty	Home Value
Indianola	16,044	$75,453	6.4%	$237,500
Hartford	760	$70,000	7.1%	$176,700
Milo	731	$79,904	1.6%	$153,100
New Virginia	587	$77,188	1.4%	$180,600
Martensdale	569	$57,500	10.2%	$181,400
Cumming	545	$162,875	4.4%	$508,000
Lacona	354	$70,100	10.7%	$97,500
St. Marys	96	$77,500	8.3%	$195,000
Ackworth	75	$111,094	28.0%	$237,500
Sandyville	44	N/A	2.3%	$187,500
Spring Hill	39	$86,250	7.7%	N/A
Bevington	15	N/A	46.7%	N/A

Explore Iowa Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Warren County is located in Iowa with a total population of 54,409. It is the 11th most populous county out of 99 in Iowa. The county encompasses 12 Census-designated places.

Age Demographics

The median age in Warren County is 38.8 years. This is about the same as the state median of 38.6 years.

Economy, Income & Housing

The median household income in Warren County is $94,588. This is 26% higher than the state median of $75,059. It is also 17% higher than the national median of $80,734. The poverty rate stands at 5.1%. This is 54% lower than the state poverty rate of 11.1%. The unemployment rate is 3.4%. This is 5% lower than the state rate of 3.6%. The median home value is $269,600. Housing costs are 30% higher than the state median of $208,000. With a home-value-to-income ratio of just 2.9x, Warren County is one of the most affordable housing markets in the area. 82.3% of occupied housing units are owner-occupied. This homeownership rate is 15% higher than the state average of 71.7%.

Race & Ethnicity

Warren County has a predominantly White (non-Hispanic) population, comprising 91.9% of all residents. Hispanic or Latino residents account for 3.7%. The Black or African American population (0.7%) is well below the state average of 3.8%. The Asian population (0.8%) is well below the state average of 2.5%.

Education

33.3% of residents aged 25 and older hold a bachelor's degree or higher. This places Warren County in the top 10% of all counties in the state for educational attainment. This is 6% higher than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.7%.

Data Sources & Methodology

All figures for Warren County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Iowa and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Warren County, Iowa?

Warren County has a population of 54,409, making it the 11th most populous county in Iowa.

What is the median income in Warren County?

The median household income in Warren County is $94,588 with a poverty rate of 5.1%.

How many cities are in Warren County, Iowa?

Warren County contains 12 Census-designated places.