County · Missouri
Audrain County, Missouri
Audrain County, Missouri. Audrain County had 24,528 residents in 2025 by the Census Bureau's estimate, down 1.7% since 2020, while Missouri grew 1.9%. It holds 9 places (9 cities, villages and boroughs) and 7 census tracts. GEOID 29007.
Audrain County is the county of the Mexico, MO micropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
24,528
Census Bureau estimate (no margin published)
2020 Census count: 24,962 · ACS 2020-2024: 24,548
Median household income
$59,448
±$5,227 (90% margin)
Missouri: $70,702
Median home value
$143,100
±$10,655 (90% margin)
Missouri: $230,300
Median gross rent
$693
±$79 (90% margin)
Missouri: $1,033
How many people live in Audrain County, and is it growing?
The 2020 Census counted 24,962 residents in Audrain County. The Census Bureau estimates 24,528 for July 1, 2025, down 1.7% since 2020, while Missouri grew 1.9%. The 2020-2024 American Community Survey puts the population at 24,548 over 692 square miles of land.
| Measure | Audrain County | Missouri | Change since 2015-2019 |
|---|---|---|---|
| Total population | 24,548 | 6,191,814 | −1,096 |
| Households | 9,219±248 | 2,508,227 | no clear change |
| Average household size | 2.51±0.07 | 2.40 | no clear change |
| Housing units | 10,561±37 | 2,825,287 | −332 |
Audrain County's population since 2000
From 25,853 in 2000 to 24,528 in 2025: down 5.1%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Audrain County?
Audrain County holds 9 places: 9 cities, villages and boroughs (incorporated places). The largest is Mexico with 11,558 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Mexico | 11,469 | $50,873 |
|---|---|---|
| Vandalia | 3,553 | $50,313 |
| Laddonia | 502 | $53,309 |
| Farber | 255 | $46,458 |
| MartinsburgGEOID 2946460 | 251 | $34,503 |
| Rush HillGEOID 2963560 | 103 | $66,250 |
| Benton CityGEOID 2904834 | 101 | $57,500 |
| VandiverGEOID 2975706 | 63 | $56,719 |
| Centralia | 4,541 | $66,438 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Audrain County?
The median resident of Audrain County is 40.2 years old; 22.7% are under 18 and 19.0% are 65 or older. The largest group is non-Hispanic white residents at 87.2%, then non-Hispanic Black residents at 4.4%. 1.4% of residents were born outside the United States.
| Measure | Audrain County | Missouri | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.2±1.0 | 39.0 | no clear change |
| Under 18 years | 22.7%±0.2 pts | 22.3% | – |
| 65 years and over | 19.0%±0.4 pts | 17.9% | – |
| Hispanic or Latino (any race) | 3.2% | 5.2% | +0.1 pts |
| White alone, not Hispanic | 87.2%±0.3 pts | 76.3% | no clear change |
| Black or African American alone, not Hispanic | 4.4%±0.6 pts | 10.9% | −1.3 pts |
| Asian alone, not Hispanic | 0.6%±0.3 pts | 2.1% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.2%±0.2 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 4.1%±0.7 pts | 4.8% | – |
| Some other race alone, not Hispanic | 0.2%±0.2 pts | 0.4% | – |
| Born outside the United States | 1.4%±0.5 pts | 4.5% | no clear change |
| Speak a language other than English at home (age 5+) | 4.9%±1.2 pts | 6.7% | – |
| Civilian veterans (age 18+) | 7.9%±1.1 pts | 7.3% | – |
| With a disability | 19.5%±2.0 pts | 14.9% | – |
| No health insurance coverage | 13.7%±2.3 pts | 8.8% | +2.9 pts |
| High school graduate or higher (age 25+) | 88.1%±2.2 pts | 91.9% | – |
| Bachelor's degree or higher (age 25+) | 16.8%±2.3 pts | 32.4% | no clear change |
| Graduate or professional degree (age 25+) | 6.5%±1.3 pts | 12.6% | – |
| Moved from another state in the past year | 0.7%±0.4 pts | 2.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Audrain County earn?
Half of Audrain County's 9,219 households earn less than $59,448 a year (±$5,227), against $70,702 in Missouri. In 2015-2019 it was $54,472 in 2024 dollars; the margins of error cannot tell the two periods apart. 17.8% of residents live below the poverty line.
| Measure | Audrain County | Missouri | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $59,448±$5,227 | $70,702 | no clear change |
| Mean household income | $71,893±$4,160 | $96,247 | – |
| Per capita income | $28,392±$1,238 | $39,695 | no clear change |
| People below the poverty line | 17.8%±2.6 pts | 12.6% | no clear change |
| Children under 18 below the poverty line | 25.9%±6.1 pts | 15.8% | no clear change |
| Households receiving SNAP | 12.3%±2.2 pts | 9.8% | – |
| Households with a broadband subscription | 85.6%±2.0 pts | 89.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Audrain County?
Owners occupy 71.8% of Audrain County's occupied homes and renters 28.2%. The median owner-occupied home is valued at $143,100 by its owner (±$10,655). The median renter pays $693 a month including utilities, and 39.0% of renters pay 35% or more of their income on rent.
| Measure | Audrain County | Missouri | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $143,100±$10,655 | $230,300 | +$22,615 |
| Median gross rent | $693±$79 | $1,033 | −$106 |
| Renters paying 35% or more of income on rent | 39.0%±7.6 pts | 36.6% | +12.2 pts |
| Median monthly owner costs, with a mortgage | $1,012±$79 | $1,524 | – |
| Owner-occupied homes | 71.8%±3.6 pts | 68.1% | no clear change |
| Housing units | 10,561±37 | 2,825,287 | −332 |
| Homeowner vacancy rate | 0.7%±0.6 pts | 0.9% | – |
| Rental vacancy rate | 6.9%±3.7 pts | 5.0% | – |
| Single-family detached homes | 80.3%±2.5 pts | 70.5% | – |
| Mobile homes | 7.0%±1.7 pts | 5.2% | – |
| Built 2020 or later | 1.4%±0.8 pts | 1.6% | – |
| Built 1939 or earlier | 18.3%±2.3 pts | 13.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Audrain County building?
Builders took permits for 28 new housing units across Audrain County in 2025 (28 single-family), 1.1 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Audrain County get to work?
83.6% of Audrain County's workers drive alone and 3.8% work from home. The average trip to work takes 21.7 minutes. The unemployment rate in 2020-2024 averaged 4.3%.
| Measure | Audrain County | Missouri | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 54.8%±2.0 pts | 63.1% | – |
| Unemployment rate | 4.3%±1.6 pts | 4.0% | no clear change |
| Drove alone to work | 83.6%±2.4 pts | 74.8% | – |
| Carpooled | 8.3%±1.8 pts | 8.1% | – |
| Public transportation | 0.3%±0.4 pts | 0.8% | – |
| Walked | 2.6%±1.0 pts | 1.8% | – |
| Worked from home | 3.8%±1.1 pts | 13.0% | no clear change |
| Mean travel time to work | 21.7 min±1.4 | 23.5 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Audrain County's census tracts?
Audrain County is divided into 7 census tracts. Among those with a reliable estimate, median household income runs from $43,527 (Tract 9504) to $76,625 (Tract 9503).
| Tract 950129007950100 | 3,238±39 | $52,344 |
|---|---|---|
| Tract 950229007950200 | 4,622±341 | $75,792 |
| Tract 950329007950300 | 3,958±332 | $76,625 |
| Tract 950429007950400 | 2,753±318 | $43,527 |
| Tract 950529007950500 | 3,621±386 | $55,694 |
| Tract 950629007950600 | 2,708±361 | $68,362 |
| Tract 950729007950700 | 3,648±411 | $53,357 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Audrain County compare with Missouri's other counties?
| Measure | Rank |
|---|---|
| Population | 44th of 115 |
| Growth 2020-2025 | 99th of 115 |
| Residents per square mile | 50th of 115 |
| Median household income | 61st of 115 |
| Median home value | 89th of 115 |
| Median gross rent | 78th of 115 |
| Poverty rate | 27th of 115 |
| Bachelor's degree or higher | 68th of 115 |
| Median age | 71st of 115 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Audrain County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.