Blackford County, Indiana
Founding: 1839 (declared in 1838) Parent county: Jay Namesake: Isaac Blackford, Indiana judge Seat: Hartford City (1839–) Land area: 165 square miles Population (2020): 12,112 Population (historic): 1,226 (1840); 4,122 (1860); 8,020 (1880); 17,213 (1900); 13,617 (1930) Periods of population growth: pre-1840–1900; 1930–1970 Subdivisions: Two cities; one town; four townships Pre-1940 residences (estimated): 1,915 (31.7%) Pre-1940 housing survival rate: 58.4% Pre-1860 housing survival rate (1940): 3.2% Farm housing in disrepair (1950): 5.2% Nonfarm housing in disrepair (1950): 8.3% Average farmhouse value (1930): $1,308 Average outbuilding value (1930): $1,254 Average farmhouse size (1940): 6.4 rooms Number of farms (1920): 1,126 Average farm size (1920): 77.8 acres Sources of settlement: Ohio and Pennsylvania _________________________________________________...