Dearborn County, Indiana
Founding: 1803 Parent county: Clark Namesake: Henry Dearborn, U.S. secretary of war Seat: Lawrenceburg (1803–1836, 1843–); Wilmington (1836–1843) Land area: 305 square miles Population (2020): 50,679 Population (historic): 7,310 (1810); 19,327 (1840); 24,116 (1870); 22,194 (1900); 21,056 (1930) Periods of population growth: pre-1810–1860; 1870s; 1920–2020 Subdivisions: Three cities; four towns; two CDPs; 14 townships Pre-1940 residences (estimated): 3,710 (18.2%) Pre-1940 housing survival rate: 49.1% Pre-1860 housing survival rate (1940): 20.1% Farm housing in disrepair (1950): 7.7% Nonfarm housing in disrepair (1950): 6.3% Average farmhouse value (1930): $1,228 Average outbuilding value (1930): $945 Average farmhouse size (1940): 5.7 rooms Number of farms (1920): 2,145 Average farm size (1920): 65.1 acres Sources of settlement: Germany, Ohio, Pennsylvania...