Preble County, Ohio

Founding: 1808
Parent counties: Butler and Montgomery

Namesake: Edward Preble, U.S. naval officer
Seat: Eaton (1808–)

Land area: 424 square miles

Population (2020): 40,999

Population (historic): 3,304 (1810); 19,482 (1840); 21,809 (1870); 23,713 (1900); 22,455 (1930)

Periods of population growth: pre-1810–1860; 1870s; 1890–1910; 1930–2000

Subdivisions: One city; 10 villages; one CDP; 12 townships

Pre-1940 residences (estimated): 4,908 (27.5%)
Pre-1940 housing survival rate: 74.4%
Pre-1860 housing survival rate (1940): 26.4%

Farm housing in disrepair (1950): 3.8%

Nonfarm housing in disrepair (1950): 5.9%
Average farmhouse value (1930): $1,985
Average outbuilding value (1930): $1,707
Average farmhouse size (1940): 6.8 rooms
Number of farms (1920): 3,095
Average farm size (1920): 70.4 acres
Sources of settlement: Virginia, Pennsylvania, Maryland, New Jersey, Ireland, and Germany
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Eaton

Namesake: William Eaton, U.S. army officer

Founding: 1806 (platting); 1813 (post office); 1836 (incorporation)

Population (2020): 8,375

Population (historic): 255 (1820); 1,346 (1850); 2,143 (1880); 3,155 (1900); 3,347 (1930)

Periods of population growth: 1806–2010
Pre-1940 residences (estimated): 803 (21.5%)
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