Marshall County, Iowa
Founding: 1849 (declared in 1846) Parent county: Unorganized territory Namesake: John Marshall, Supreme Court chief justice Seat: Marietta (1851–1863); Marshalltown (1863–) Land area: 572 square miles Population (2020): 40,105 Population (historic): 338 (1850); 17,576 (1870); 25,842 (1890); 30,279 (1910); 33,727 (1930) Periods of population growth: 1850–1980; 1990–2010 Subdivisions: 14 cities; one CDP; 16 townships Pre-1940 residences (estimated): 5,686 (33.9%) Pre-1940 housing survival rate: 59.8% Farm housing in disrepair (1950): 3.1% Nonfarm housing in disrepair (1950): 7% Average farmhouse value (1930): $2,688 Average outbuilding value (1930): $3,240 Average farmhouse size (1940): 7 rooms Number of farms (1920): 2,315 Average farm size (1920): 138.3 acres Sources of settlement: Ohio, Illinois, New York, Pennsylvania, Indiana, and Germany ________________________________...