Warren County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 11th-largest in Iowa
The population of Warren County, Iowa is 53,484 as of the 2023 American Community Survey, making it the 11th-largest county in Iowa. The median household income is $92,990, the median home value is $252,800, and the median age is 38.7.
The population of Warren County has grown 21.6% since 2010 (46,341 → 56,343), a +1.41% annualized rate.
53,484
Population
+1.41%
Annual growth
94
People / sq mi
$92,990
Median Income
$252,800
Median Home Value
Warren County covers 570 sq mi of land at 93.9 people per square mile.
About Warren County, IA
The poverty rate is what most separates Warren County from the typical county: 3.1% of residents live below the federal poverty line, against 12.4% nationally. Warren County is a county in Iowa with a population of 53,484. It ranks #11 among counties in Iowa by population.
Households here are among the highest-earning of all US counties: median income is $92,990, above the US median of $78,538. Very few residents live in poverty — 3.1%, below the national 12.4%. A typical home is worth $252,800, with typical rent around $975.
About 32.7% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 13.6% of workers primarily work from home, close to the national 14.0%, and the average commute runs about 24 minutes each way.
Warren County Population History (2010-2024)
The county of Warren County had a population of 46,341 in 2010 and 56,343 in 2024, a 21.6% growth over 14 years. The peak was 56,343 in 2024. Average annual growth rate: 1.41%.
56,343
Population (2024)
46,341
Population (2010)
56,343
Peak (2024)
1.41%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 46,341 |
| 2011 | 46,654 |
| 2012 | 46,906 |
| 2013 | 47,369 |
| 2014 | 47,848 |
| 2015 | 48,486 |
| 2016 | 49,383 |
| 2017 | 50,087 |
| 2018 | 51,053 |
| 2019 | 51,548 |
| 2020 | 52,591 |
| 2021 | 53,487 |
| 2022 | 54,325 |
| 2023 | 55,298 |
| 2024 | 56,343 |
Race & Ethnicity
| White | 93.8% |
| Black or African American | 0.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Age & Sex
38.7
Median Age
50.3%
Female
49.7%
Male
16.5%
Age 65+
Age Distribution
Children (under 15): 20.3% · Seniors (65+): 16.5%
Income & Poverty
| Median household income | $92,990+$19,843 vs state |
| Mean household income | $111,116 |
| Per-capita income | $43,239 |
| Poverty rate | 3.1%-3.8% vs state |
| Unemployment rate | 2.1% |
| Employment-to-population | 66.4% |
Top Industries by Employment
The largest employment sector in Warren County is professional & business services, accounting for 22.7% of workers.
How residents commute
0.0%
Drive alone
2.6%
Carpool
76.7%
Public transit
13.6%
Work from home
24.2 min
Avg commute
Housing
$252,800+$56,900 vs state
Median home value
$975
Median rent
83.0%
Homeownership rate
21,473
Total housing units
94.2%
Occupied
5.8%
Vacant
17.0%
Renter-occupied
Social & access
97.8%
With health insurance
96.4%
With broadband internet
18.2%
Foreign-born
7.1%
Veterans (18+)
10.6%
With a disability
97.0%
Speak language other than English at home
Education
96.7%
High School+
32.7%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Warren County, Iowa has a population of 53,484 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 11th-largest county in Iowa. Population density is 94 people per square mile.
The population of Warren County has grown 21.6% since 2010 (46,341 → 56,343), a +1.41% annualized rate.
The median household income in Warren County, Iowa is $92,990, with mean (average) household income of $111,116 and per-capita income of $43,239. 3.1% of residents live below the federal poverty level.
In Warren County, the largest racial and ethnic groups are White (93.8%), Hispanic or Latino (1.2%), Black or African American (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Warren County, Iowa is 38.7 years. Residents are 50.3% female and 49.7% male.
The median home value in Warren County is $252,800 and median monthly rent is $975. 83.0% of occupied housing units are owner-occupied. The county has 21,473 total housing units, 5.8% of which are vacant.
The largest employment sector in Warren County, Iowa is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 2.1%.
Des Moines is among the largest cities associated with Warren County, Iowa, with a population of 212,464.
Warren County, IA Climate
Warren County, IA has an average annual temperature of 10°C (50°F) and receives about 898 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10°C
Avg Temp
898
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -6° / 20° | 27 mm |
| February | -3° / 27° | 30 mm |
| March | 4° / 38° | 58 mm |
| April | 10° / 51° | 91 mm |
| May | 16° / 62° | 111 mm |
| June | 22° / 71° | 115 mm |
| July | 24° / 76° | 107 mm |
| August | 23° / 73° | 98 mm |
| September | 18° / 65° | 98 mm |
| October | 12° / 53° | 72 mm |
| November | 3° / 38° | 56 mm |
| December | -3° / 26° | 35 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Warren County, IA
The most comfortable months to visit Warren County, IA are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -12°C low). June is usually the wettest month.
Where to stay near Warren County
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Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.