Marion County, Indiana

 

Founding: 1822
Parent county: Unorganized territory

Namesake: Francis Marion, Continental Army general
Seat: Indianapolis (1822–)

Land area: 396 square miles

Population (2020): 977,203

Population (historic): 7,192 (1830); 24,103 (1850); 71,939 (1870); 197,227 (1900); 422,666 (1930)

Periods of population growth: pre-1830–1970; 1980–2020

Subdivisions: Four cities; 12 towns; nine townships

Pre-1940 residences (estimated): 69,340 (16.3%)
Pre-1940 housing survival rate: 44.6%
Pre-1860 housing survival rate (1940): 13.5%

Farm housing in disrepair (1950): 5.5%

Nonfarm housing in disrepair (1950): 6.3%
Average farmhouse value (1930): $2,435
Average outbuilding value (1930): $1,759
Average farmhouse size (1940): 6 rooms
Number of farms (1920): 2,855
Average farm size (1920): 58.4 acres
Sources of settlement: Ohio, Germany, Kentucky, Pennsylvania, Ireland, Virginia, and New York
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Indianapolis

Namesake: A Greek-inspired neologism meaning "Indiana city"

Founding: 1821 (platting); 1822 (post office); 1832 (incorporation)

Population (2020): 887,642

Population (historic): 2,695 (1840); 18,611 (1860); 75,056 (1880); 169,164 (1900); 364,161 (1930)

Periods of population growth: 1821–1970; 1980–2020
Pre-1940 residences (estimated): 66,177 (17.2%)
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