Woodbury County, Iowa

Founding: 1853 (declared in 1851)
Parent county: Unorganized territory
Namesake: Levi Woodbury, New Hampshire politician
Seat: Thompsonville (1853–1856); Sioux City (1856–)
Land area: 873 square miles
Population (2020): 105,941
Population (historic): 1,119 (1860); 14,996 (1880); 54,610 (1900); 101,669 (1930)
Periods of population growth: pre-1860–1890; 1900–1960; 1990s; 2010s
Subdivisions: 16 cities; one CDP; 24 townships
National Register listings: 63
Pre-1940 residences (estimated): 13,365 (31.6%)
Pre-1940 housing survival rate: 49.5%

Farm housing in disrepair (1950): 6.9%

Nonfarm housing in disrepair (1950): 5.3%

Average farmhouse value (1930): $2,062
Average outbuilding value (1930): $2,317

Average farmhouse size (1940): 6.2 rooms
Number of farms (1920): 2,969
Average farm size (1920): 155.1 acres
Sources of settlement: Illinois, Germany, Wisconsin, New York, Ohio, Sweden, and Norway
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Sioux City

 
Namesake: The Sioux tribe
Founding: 1854 (platting); 1855 (post office); 1857 (incorporation)
Population (2020): 85,797
Population (historic): 3,401 (1870); 37,806 (1890); 47,828 (1910); 79,183 (1930)
Periods of population growth: 1854–1890; 1900–1960; 1990s; 2010s
Pre-1940 residences (estimated): 11,236 (33.3%)
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Outstanding Buildings

1. John Marshall House (c. 1910). 4789 250th Road. Morgan. Classical Revival.