Calhoun County, Iowa
Founding: 1855 (declared in 1851) Parent county: Unorganized territory Namesake: John Calhoun, South Carolina politician Seat: Lake City (1856–1877); Rockwell City (1877–) Land area: 570 square miles Population (2020): 9,927 Population (historic): 1,602 (1870); 13,107 (1890); 17,090 (1910); 17,605 (1930) Periods of population growth: 1860–1900; 1910s; 2010s Subdivisions: 12 cities; 16 townships Pre-1940 residences (estimated): 1,820 (35.9%) Pre-1940 housing survival rate: 46.7% Farm housing in disrepair (1950): 3.3% Nonfarm housing in disrepair (1950): 5.7% Average farmhouse value (1930): $2,322 Average outbuilding value (1930): $2,902 Average farmhouse size (1940): 6.8 rooms Number of farms (1920): 2,060 Average farm size (1920): 160.3 acres Sources of settlement: Iowa, Illinois, Germany, Sweden, and New York _________________________________________________________________...