Posey County, Indiana

 

Founding: 1814
Parent county: Warrick

Namesake: Thomas Posey, Indiana territorial governor
Seat: Mount Vernon (1816–)

Land area: 410 square miles

Population (2020): 25,222

Population (historic): 4,061 (1820); 12,549 (1850); 19,185 (1870); 22,333 (1900); 17,853 (1930)

Periods of population growth: pre-1820–1900; 1930–1950; 1960–1980; 1990s

Subdivisions: One city; four towns; one CDP; ten townships

National Register listings: 20

Pre-1940 residences (estimated): 1,834 (16%)
Pre-1940 housing survival rate: 40.5%
Pre-1860 housing survival rate (1940): 12%

Farm housing in disrepair (1950): 8.3%

Nonfarm housing in disrepair (1950): 9.1%
Average farmhouse value (1930): $1,109
Average outbuilding value (1930): $956

Average farmhouse size (1940): 5.2 rooms
Number of farms (1920): 2,071
Average farm size (1920): 102.2 acres
Sources of settlement: Germany, Kentucky, Illinois, and Tennessee

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Mount Vernon

Namesake: Mount Vernon, George Washington's plantation

Founding: 1816 (platting); 1818 (post office); 1832 (incorporation)

Population (2020): 6,493

Population (historic): 1,120 (1850); 2,880 (1870); 5,132 (1900); 5,035 (1930)

Periods of population growth: pre-1850–1910; 1930–1950; 1960–1980; 1990s
Pre-1940 residences (estimated): 630 (19.8%)

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Outstanding Buildings

1. William Winterheimer Farm (c. 1870). County Road 250N, west of Section Line Road. Robinson. Italianate.
2. Joseph Cale House (c. 1865). 8900 State Route 68. Smith. Italianate.