Sac County, Iowa

Founding: 1856 (declared in 1851)
Parent county: Unorganized territory
Namesake: The Sauk people
Seat: Sac City (1856–)
Land area: 575 square miles
Population (2020): 9,814
Population (historic): 246 (1860); 8,774 (1880); 17,639 (1900); 17,641 (1930)
Periods of population growth: 1860–1900; 1910–1930
Subdivisions: Nine cities; 16 townships
National Register listings: 13
Pre-1940 residences (estimated): 2,178 (40.4%)
Pre-1940 housing survival rate: 46.5%

Farm housing in disrepair (1950): 2%

Nonfarm housing in disrepair (1950): 2.4%

Average farmhouse value (1930): $2,388
Average outbuilding value (1930): $3,357
Average farmhouse size (1940): 7 rooms
Number of farms (1920): 1,945
Average farm size (1920): 169.2 acres
Sources of settlement: Iowa, Illinois, Germany, New York, Ohio, Pennsylvania, Wisconsin, and Sweden
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Sac City

 
Namesake: The Sauk people
Founding: 1855 (platting); 1857 (post office); 1874 (incorporation)
Population (2020): 2,063
Population (historic): 156 (1870); 1,249 (1890); 2,201 (1910); 2,854 (1930)
Periods of population growth: 1855–1960
Pre-1940 residences (estimated): 423 (37.2%)
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Outstanding Buildings

1. John Hudson Farm (c. 1895). 1521 200th Road. Eureka. Eastlake.