Audrain County, Missouri

Audrain County: county in Missouri, United States

About

Audrain County is a county located in the U.S. state of Missouri. As of the 2010 census, the population was 25,529 and a population density of 14 people per km². After 10 years in 2020 county had an estimated population of 24,835 inhabitants. Its county seat is Mexico. The county was created 195 years ago in 1831.

Audrain County locator map
Location of Audrain County on Missouri map.

County Snapshot

Audrain County at a glance

Audrain County currently has 9 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

9

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Quick Facts about Audrain County

Population 24,835 (2020)
Country United States of America
State Missouri (United States)
Area 1805 km2
Water as percent of area 0.7%
Land as percent of area 99.3%
Latitude & Longitude 39.2158,-91.8416
Named for James Hunter Audrain
Altitude 741 feet / 226 meters
Capital Mexico
Establishment January 12, 1831
Time Zone America/Chicago
Local time 21:07:33 (15th April 2026)
Density 14 Pop. per km² as of 2020
Population growth -2.79% (2010-2020)
Weather 75℉ Showers And Thunderstorms Likely 7-days weather
Audrain County Missouri Courthouse image
Audrain County Missouri Courthouse image

Geography

Audrain County is located at 39°12'57"N 91°50'30"W (39.2157600, -91.8415900). It has 7 neighbors: Callaway County, Columbia, Monroe County, Montgomery County, Pike County, Ralls County and Randolph County.

Audrain County map

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The largest city of Audrain County is Mexico with a population of 11,530. Other cities include, Vandalia population 3,496, Laddonia population 498, Farber population 310 and Martinsburg population 299. See all Audrain County cities & populated places.

Audrain County Populated Places

Cities, towns, neighborhoods & other populated places in Audrain County.

City Name Population Title
Mexico 11,530 City in and county seat of Audrain County, Missouri
Vandalia 3,496 City in Audrain and Ralls Counties, Missouri, USA
Laddonia 498 City in Audrain County, Missouri, United States
Farber 310 City in Audrain County, Missouri, United States
Martinsburg 299 Town in Audrain County, Missouri, United States
Rush Hill 143 Human settlement in Audrain County, Missouri, United States of America
Benton City 103 Human settlement in Audrain County, Missouri, United States of America
Vandiver 69 Human settlement in Audrain County, Missouri, United States of America
Champ 13 Unincorporated community in Missouri

Weather

75°F
Showers And Thunderstorms Likely
13 to 17 mph SW Wednesday

Showers and thunderstorms likely. Partly sunny, with a high near 75. Chance of precipitation is 60%.

7-Day Forecast

Official website of Audrain County

Official Website
  • Mexico

Demographics

According to census records, the population of Audrain County decreased by 2.79% in 10 years.

Year Population % Change Method
2010 25,529 - census
2011 25,527 -0.01% estimation process
2012 25,524 -0.01% estimation process
2013 25,545 0.08% estimation process
2014 25,816 1.05% estimation process
2015 25,950 0.52% estimation process
2016 25,870 -0.31% estimation process
2017 25,590 -1.09% estimation process
2018 25,423 -0.66% estimation process
2019 25,388 -0.14% estimation process
2020 24,835 -2.23% estimation process
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People born in Audrain County (2)

People born in Audrain County, including politician Homer Jones, teacher and mycologist Ida May Clendenin, .

More notable people

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