Gallia County, Ohio

Founding: 1803
Parent county: Washington

Named for: The country of France, whose Latin name is Gallia
Seat: Gallipolis (1803–)

Land area: 467 square miles

Population (2020): 29,220

Population (historic): 4,181 (1810); 17,063 (1850); 28,124 (1880); 27,918 (1900); 23,050 (1930)

Periods of population growth: pre-1810–1880; 1890s; 1930s; 1950s; 1970–2000

Subdivisions: Six villages; one CDP; 15 townships

Pre-1940 residences (estimated): 1,731 (12.5%)
Pre-1940 housing survival rate: 37.1%
Pre-1860 housing survival rate (1940): 12.4%

Farm housing in disrepair (1950): 13.3%

Nonfarm housing in disrepair (1950): 10.8%
Average farmhouse value (1930): $725
Average outbuilding value (1930): $471
Average farmhouse size (1940): 5.5 rooms
Number of farms (1920): 2,963
Average farm size (1920): 66.5 acres
Sources of settlement: Virginia, Pennsylvania, Wales, and Germany
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Gallipolis

Namesake: A Latin–Greek neologism meaning "French city"

Founding: 1790 (platting); 1794 (post office); 1804 (incorporation)

Population (2020): 3,313

Population (historic): 1,413 (1840); 3,418 (1860); 4,400 (1880); 5,432 (1900); 7,106 (1930)

Periods of population growth: pre-1840–1960
Pre-1940 residences (estimated): 607 (35.1%)
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