Adams County, Indiana

Founding: 1836 (declared in 1835)
Parent county: Unorganized territory

Namesake: John Quincy Adams, U.S. president
Seat: Decatur (1836–)

Land area: 339 square miles

Population (2020): 35,809

Population (historic): 2,264 (1840); 9,252 (1860); 20,181 (1890); 19,957 (1930)

Periods of population growth: pre-1840–1900; 1930–2020

Subdivisions: Four cities; 12 townships

Pre-1940 residences (estimated): 4,201 (31.8%)
Pre-1940 housing survival rate: 68.1%
Pre-1860 housing survival rate (1940): 4.2%

Farm housing in disrepair (1950): 8.8%

Nonfarm housing in disrepair (1950): 4.8%
Average farmhouse value (1930): $1,514
Average outbuilding value (1930): $1,548

Average farmhouse size (1940): 7 rooms
Number of farms (1920): 2,328
Average farm size (1920): 78 acres
Sources of settlement: Ohio, Germany, Pennsylvania, and Switzerland

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Decatur

Namesake: Stephen Decatur, U.S. naval officer

Founding: 1836 (platting); 1837 (post office); 1853 (incorporation)

Population (2020): 9,913

Population (historic): 231 (1850); 858 (1870); 4,148 (1900); 5,156 (1930)

Periods of population growth: 1836–1980; 1990s; 2010s
Pre-1940 residences (estimated): 1,405 (32.3%)

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