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

National Register listings: 17

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
_________________________________________________________________________________

Marshalltown

Namesake: Marshall, Michigan

Founding: 1853 (platting); 1854 (post office); 1923 (incorporation)

Population (2020): 27,591

Population (historic): 981 (1860); 6,240 (1880); 11,544 (1900); 17,373 (1930)

Periods of population growth: 1853–1980; 1990–2020
Pre-1940 residences (estimated): 3,893 (34.8%)
_________________________________________________________________________________



View and filter the data. Or see a larger map.
_________________________________________________________________________________

Outstanding Buildings

1. *August Riemenschneider Farm (c. 1905). 201 4th Avenue. State Center. Queen Anne/Classical Revival.
2. *Thomas Swearingen Farm (c. 1880). 2162 Stanley Mill Road. Taylor. Italianate.