Indiana County, Pennsylvania

Founding: 1806 (declared in 1803)
Parent counties: Lycoming and Westmoreland

Namesake: A reference to the 1768 Treaty of Fort Stanwix
Seat: Indiana (1806–)

Land area: 827 square miles

Population (2020): 83,246

Population (historic): 6,214 (1810); 20,782 (1840); 36,138 (1870); 42,556 (1900); 75,395 (1930)

Periods of population growth: pre-1810–1920; 1930s; 1960–1980

Subdivisions: 14 boroughs; 11 CDPs; 24 townships

Pre-1940 residences (estimated): 9,984 (25.7%)
Pre-1940 housing survival rate: 54.7%
Pre-1860 housing survival rate (1940): 15.7%

Farm housing in disrepair (1950): 12.2%

Nonfarm housing in disrepair (1950): 8.8%
Average farmhouse value (1930): $1,537
Average outbuilding value (1930): $1,497
Average farmhouse size (1940): 6.2 rooms
Number of farms (1920): 3,935
Average farm size (1920): 70.6 acres
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Indiana

Namesake: Indiana County

Founding: 1805 (platting); 1810 (post office); 1816 (incorporation)

Population (2020): 14,044

Population (historic): 317 (1820); 963 (1850); 1,605 (1870); 4,142 (1900); 9,569 (1930)

Periods of population growth: pre-1820–1970; 2010s
Pre-1940 residences (estimated): 1,654 (32.1%)
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