Adair County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 41st-largest in Missouri
The population of Adair County, Missouri is 25,224 as of the 2023 American Community Survey, making it the 41st-largest county in Missouri. The median household income is $56,583, the median home value is $159,500, and the median age is 29.8.
The population of Adair County has grown 0.1% since 2010 (25,638 → 25,660), a +0.01% annualized rate.
25,224
Population
+0.01%
Annual growth
44
People / sq mi
$56,583
Median Income
$159,500
Median Home Value
Adair County covers 567 sq mi of land at 44.5 people per square mile.
About Adair County, MO
Adair County is a county in Missouri with a population of 25,224. It ranks #41 among counties in Missouri by population. The median age is 29.8, younger than the national median. The population is 48.6% male and 51.4% female.
The median household income in Adair County is $56,583, below the US median of $74,580. 8.8% of residents live below the federal poverty level. Home values sit at a median of $159,500, with monthly rent averaging $782. The homeownership rate of 60.6% is lower than the national rate of 64.8%.
Educational attainment in Adair County reflects 35.0% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 7.6% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 15.8 minutes each way.
Adair County Population History (2010-2024)
The county of Adair County had a population of 25,638 in 2010 and 25,660 in 2024, a 0.1% growth over 14 years. The peak was 25,728 in 2013. Average annual growth rate: 0.01%.
25,660
Population (2024)
25,638
Population (2010)
25,728
Peak (2013)
0.01%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 25,638 |
| 2011 | 25,676 |
| 2012 | 25,696 |
| 2013 | 25,728 |
| 2014 | 25,552 |
| 2015 | 25,396 |
| 2016 | 25,313 |
| 2017 | 25,522 |
| 2018 | 25,593 |
| 2019 | 25,511 |
| 2020 | 25,272 |
| 2021 | 25,188 |
| 2022 | 25,155 |
| 2023 | 25,231 |
| 2024 | 25,660 |
Race & Ethnicity
| White | 88.9% |
| Black or African American | 4.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
| Two or More Races | 0.0% |
Age & Sex
29.8
Median Age
51.4%
Female
48.6%
Male
15.2%
Age 65+
Age Distribution
Children (under 15): 15.3% · Seniors (65+): 15.2%
Income & Poverty
| Median household income | $56,583$-12,337 vs state |
| Mean household income | $91,227 |
| Per-capita income | $33,713 |
| Poverty rate | 8.8%+0.4% vs state |
| Unemployment rate | 2.6% |
| Employment-to-population | 51.2% |
Top Industries by Employment
The largest employment sector in Adair County is professional & business services, accounting for 33.2% of workers.
How residents commute
0.2%
Drive alone
4.2%
Carpool
75.2%
Public transit
7.6%
Work from home
15.8 min
Avg commute
Housing
$159,500$-56,100 vs state
Median home value
$782
Median rent
60.6%
Homeownership rate
11,380
Total housing units
78.3%
Occupied
21.7%
Vacant
39.4%
Renter-occupied
Social & access
91.8%
With health insurance
91.7%
With broadband internet
30.1%
Foreign-born
4.5%
Veterans (18+)
12.1%
With a disability
94.0%
Speak language other than English at home
Education
92.7%
High School+
35.0%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Adair County, Missouri has a population of 25,224 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 41st-largest county in Missouri. Population density is 44 people per square mile.
The population of Adair County has grown 0.1% since 2010 (25,638 → 25,660), a +0.01% annualized rate.
The median household income in Adair County, Missouri is $56,583, with mean (average) household income of $91,227 and per-capita income of $33,713. 8.8% of residents live below the federal poverty level.
In Adair County, the largest racial and ethnic groups are White (88.9%), Black or African American (4.2%), Hispanic or Latino (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Adair County, Missouri is 29.8 years. Residents are 51.4% female and 48.6% male.
The median home value in Adair County is $159,500 and median monthly rent is $782. 60.6% of occupied housing units are owner-occupied. The county has 11,380 total housing units, 21.7% of which are vacant.
The largest employment sector in Adair County, Missouri is professional, scientific, and management services, employing 33.2% of workers. The unemployment rate is 2.6%.
Kansas City is among the largest cities associated with Adair 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.