Douglas County, Missouri

Founding: 1857
Parent county: Ozark

Namesake: Stephen Douglas, Illinois politician
Seat: Vera Cruz (1857–1869); Arno (1869–1871); Ava (1871–)

Land area: 814 square miles

Population (2020): 11,578

Population (historic): 2,414 (1860); 7,753 (1880); 16,802 (1900); 13,959 (1930)

Periods of population growth: pre-1860–1900; 1930s; 1970–2010

Subdivisions: One city; 23 townships

National Register listings: Two

Pre-1940 residences (estimated): 641 (9.8%)
Pre-1940 housing survival rate: 21.8%
Pre-1860 housing survival rate (1940): 1.4%

Farm housing in disrepair (1950): 19.2%

Nonfarm housing in disrepair (1950): 15.1%

Average farmhouse value (1930): $466
Average outbuilding value (1930): $328
Average farmhouse size (1940): 3.8 rooms
Number of farms (1920): 2,633
Average farm size (1920): 62.6 acres
Sources of settlement: Missouri, Tennessee, Illinois, Indiana, and Kentucky
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Ava

Namesake: Unknown

Founding: 1871 (platting as Militia Springs); 1872 (post office); 1908 (incorporation)

Population (2020): 2,894

Population (historic): 134 (1880); 713 (1910); 1,041 (1930)

Periods of population growth: pre-1880–1950; 1960–2000
Pre-1940 residences (estimated): 155 (11.3%)
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