Ross County, Ohio
Founding: 1798 Parent counties: Adams, Hamilton, and Washington Namesake: James Ross, Pennsylvania senator Seat: Chillicothe (1798–) Land area: 689 square miles Population (2020): 77,093 Population (historic): 8,540 (1800); 32,074 (1850); 40,307 (1880); 40,940 (1900); 45,181 (1930) Periods of population growth: pre-1800–1880; 1890s; 1910–1960; 1970–2010 Subdivisions: One city; six villages; three CDPs; 16 townships Pre-1940 residences (estimated): 6,551 (20.5%) Pre-1940 housing survival rate: 50% Pre-1860 housing survival rate (1940): 22.5% Farm housing in disrepair (1950): 18.9% Nonfarm housing in disrepair (1950): 10.4% Average farmhouse value (1930): $1,278 Average outbuilding value (1930): $1,006 Average farmhouse size (1940): 5.3 rooms Number of farms (1920): 2,949 Average farm size (1920): 92.5 acres Sources of settlement: Virginia, Pen...