Hancock County, Iowa

Founding: 1858 (declared in 1851)
Parent county: Unorganized territory
Namesake: John Hancock, Founding Father
Seat: Concord (1859–1899); Garner (1899–)
Land area: 571 square miles
Population (2020): 10,795
Population (historic): 179 (1860); 3,453 (1880); 13,752 (1900); 14,802 (1930)
Periods of population growth: 1860–1900; 1910–1940; 1970s
Subdivisions: Eight cities; four CDPs; 16 townships
National Register listings: Nine
Pre-1940 residences (estimated): 1,504 (28.2%)
Pre-1940 housing survival rate: 49.1%

Farm housing in disrepair (1950): 6%

Nonfarm housing in disrepair (1950): 6.2%

Average farmhouse value (1930): $2,091
Average outbuilding value (1930): $3,036
Average farmhouse size (1940): 6.6 rooms
Number of farms (1920): 1,875
Average farm size (1920): 160.4 acres
Sources of settlement: Illinois, Germany, Wisconsin, Denmark, New York, and Ohio
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Garner

 
Namesake: W.W. Garner, railroad engineer
Founding: 1870 (platting); 1871 (post office); 1881 (incorporation)
Population (2020): 3,065
Population (historic): 321 (1880); 1,288 (1900); 1,241 (1930)
Periods of population growth: 1870–1900; 1910s; 1930–2010
Pre-1940 residences (estimated): 205 (15%)
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Outstanding Buildings

1. Grover Maben Farm (c. 1870). 1950 River Road. Ellington.