Warren County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 32nd-largest in Missouri
The population of Warren County, Missouri is 36,467 as of the 2023 American Community Survey, making it the 32nd-largest county in Missouri. The median household income is $77,989, the median home value is $241,200, and the median age is 40.8.
The population of Warren County has grown 18.0% since 2010 (32,612 → 38,478), a +1.19% annualized rate.
36,467
Population
+1.19%
Annual growth
85
People / sq mi
$77,989
Median Income
$241,200
Median Home Value
Warren County covers 429 sq mi of land at 85.1 people per square mile.
About Warren County, MO
Warren County is a county in Missouri with a population of 36,467. It ranks #32 among counties in Missouri by population. The median age is 40.8, older than the national median. The population is 50.0% male and 50.0% female.
The median household income in Warren County is $77,989, near the US median of $74,580. 5.1% of residents live below the federal poverty level. Home values sit at a median of $241,200, with monthly rent averaging $913. The homeownership rate of 82.4% is higher than the national rate of 64.8%.
Educational attainment in Warren County reflects 19.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.7% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 31.0 minutes each way.
Warren County Population History (2010-2024)
The county of Warren County had a population of 32,612 in 2010 and 38,478 in 2024, a 18.0% growth over 14 years. The peak was 38,478 in 2024. Average annual growth rate: 1.19%.
38,478
Population (2024)
32,612
Population (2010)
38,478
Peak (2024)
1.19%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 32,612 |
| 2011 | 32,615 |
| 2012 | 32,746 |
| 2013 | 32,987 |
| 2014 | 33,185 |
| 2015 | 33,539 |
| 2016 | 33,875 |
| 2017 | 34,462 |
| 2018 | 34,801 |
| 2019 | 35,716 |
| 2020 | 35,740 |
| 2021 | 36,562 |
| 2022 | 37,292 |
| 2023 | 37,815 |
| 2024 | 38,478 |
Race & Ethnicity
| White | 90.1% |
| Black or African American | 2.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.5% |
| Two or More Races | 0.0% |
Age & Sex
40.8
Median Age
50.0%
Female
50.0%
Male
17.9%
Age 65+
Age Distribution
Children (under 15): 19.2% · Seniors (65+): 17.9%
Income & Poverty
| Median household income | $77,989+$9,069 vs state |
| Mean household income | $97,919 |
| Per-capita income | $36,403 |
| Poverty rate | 5.1%-3.3% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 61.4% |
Top Industries by Employment
The largest employment sector in Warren County is professional & business services, accounting for 19.7% of workers.
How residents commute
0.2%
Drive alone
0.5%
Carpool
81.4%
Public transit
7.7%
Work from home
31.0 min
Avg commute
Housing
$241,200+$25,600 vs state
Median home value
$913
Median rent
82.4%
Homeownership rate
15,834
Total housing units
84.7%
Occupied
15.3%
Vacant
17.6%
Renter-occupied
Social & access
91.8%
With health insurance
94.2%
With broadband internet
20.5%
Foreign-born
9.6%
Veterans (18+)
14.5%
With a disability
96.8%
Speak language other than English at home
Education
89.2%
High School+
19.6%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Warren County, Missouri has a population of 36,467 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 32nd-largest county in Missouri. Population density is 85 people per square mile.
The population of Warren County has grown 18.0% since 2010 (32,612 → 38,478), a +1.19% annualized rate.
The median household income in Warren County, Missouri is $77,989, with mean (average) household income of $97,919 and per-capita income of $36,403. 5.1% of residents live below the federal poverty level.
In Warren County, the largest racial and ethnic groups are White (90.1%), Hispanic or Latino (2.5%), Black or African American (2.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Warren County, Missouri is 40.8 years. Residents are 50.0% female and 50.0% male.
The median home value in Warren County is $241,200 and median monthly rent is $913. 82.4% of occupied housing units are owner-occupied. The county has 15,834 total housing units, 15.3% of which are vacant.
The largest employment sector in Warren County, Missouri is professional, scientific, and management services, employing 19.7% of workers. The unemployment rate is 2.4%.
Kansas City is among the largest cities associated with Warren County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.