Audrain County, Missouri

Founding: 1836 (declared in 1831)
Parent counties: Ralls and unorganized territory

Namesake: James Audrain, Missouri militaman
Seat: Mexico (1837–)

Land area: 692 square miles

Population (2020): 24,962

Population (historic): 1,949 (1840); 8,075 (1860); 19,732 (1880); 21,160 (1900); 22,077 (1930)

Periods of population growth: pre-1840–1890; 1900s; 1920–1960; 1990s

Subdivisions: Four cities; four villages; eight townships

National Register listings: Four

Pre-1940 residences (estimated): 1,465 (13.5%)
Pre-1940 housing survival rate: 32.2%
Pre-1860 housing survival rate (1940): 5.6%

Farm housing in disrepair (1950): 10.2%

Nonfarm housing in disrepair (1950): 9.8%

Average farmhouse value (1930): $1,611
Average outbuilding value (1930): $1,267

Average farmhouse size (1940): 5.3 rooms
Number of farms (1920): 2,521
Average farm size (1920): 151.4 acres
Sources of settlement: Kentucky, Illinois, Virginia, and Ohio

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Mexico

Namesake: The country of Mexico

Founding: 1836 (platting as New Mexico); 1837 (post office); 1855 (incorporation)

Population (2020): 11,469

Population (historic): 960 (1860); 3,835 (1880); 5,099 (1900); 8,290 (1930)

Periods of population growth: pre-1860–1960; 1970s; 1990–2010
Pre-1940 residences (estimated): 770 (14.4%)

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