Darke County, Ohio
Founding: 1817 (declared in 1809) Parent county: Miami Namesake: William Darke, Continental Army captain Seat: Greenville (1817–) Land area: 598 square miles Population (2020): 51,881 Population (historic): 3,622 (1820); 26,009 (1860); 42,532 (1900); 38,009 (1930) Periods of population growth: pre-1820–1890; 1930–1980 Subdivisions: One city; 20 villages; 20 townships Pre-1940 residences (estimated): 8,211 (36.2%) Pre-1940 housing survival rate: 68.6% Pre-1860 housing survival rate (1940): 15.3% Farm housing in disrepair (1950): 5.4% Nonfarm housing in disrepair (1950): 6.9% Average farmhouse value (1930): $1,663 Average outbuilding value (1930): $1,629 Average farmhouse size (1940): 6.8 rooms Number of farms (1920): 5,456 Average farm size (1920): 60.6 acres Sources of settlement: Pennsylvania, Indiana, Germany, Maryland, Virginia, Ireland, an...