Appanoose County, Iowa

Founding: 1846 (declared in 1843)
Parent county: Unorganized territory

Namesake: Appanoose, Meskwaki chief
Seat: Centerville (1846–)

Land area: 497 square miles

Population (2020): 12,317

Population (historic): 3,131 (1850); 16,456 (1870); 18,961 (1890); 28,701 (1910); 24,835 (1930)

Periods of population growth: pre-1850–1920; 1970s

Subdivisions: 11 cities; 17 townships

National Register listings: 13

Pre-1940 residences (estimated): 2,218 (33.5%)
Pre-1940 housing survival rate: 34.2%
Pre-1860 housing survival rate (1940): 1.6%

Farm housing in disrepair (1950): 12.5%

Nonfarm housing in disrepair (1950): 19%

Average farmhouse value (1930): $1,211
Average outbuilding value (1930): $1,037
Average farmhouse size (1940): 5.6 rooms
Number of farms (1920): 2,283
Average farm size (1920): 105.8 acres
Sources of settlement: Ohio, Indiana, Pennsylvania, Illinois, Missouri, and Virginia
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Centerville

Namesake: William Senter, Tennessee politician

Founding: 1846 (platting as Chaldea); 1848 (post office); 1855 (incorporation)

Population (2020): 5,412

Population (historic): 509 (1860); 2,475 (1880); 5,256 (1900); 8,147 (1930)

Periods of population growth: pre-1860–1920; 1930s
Pre-1940 residences (estimated): 1,227 (41.2%)
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Outstanding Buildings

1. *William Vermilion House (1870). 21793 207th Road. Vermillion. Italianate.