Hamilton County, Iowa

Founding: 1857
Parent county: Webster
Namesake: William Hamilton, Iowa senator
Seat: Webster City (1857–)
Land area: 577 square miles
Population (2020): 15,039
Population (historic): 1,699 (1860); 11,252 (1880); 19,514 (1900); 20,978 (1930)
Periods of population growth: pre-1860–1900; 1910–1930; 1950s; 1990s
Subdivisions: Nine cities; 16 townships
National Register listings: Eight
Pre-1940 residences (estimated): 2,582 (35.9%)
Pre-1940 housing survival rate: 53.7%

Farm housing in disrepair (1950): 7.7%

Nonfarm housing in disrepair (1950): 6.1%

Average farmhouse value (1930): $2,557
Average outbuilding value (1930): $2,973
Average farmhouse size (1940): 6.9 rooms
Number of farms (1920): 2,181
Average farm size (1920): 145.2 acres
Sources of settlement: Norway, Illinois, New York, Iowa, Ohio, and Pennsylvania
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Webster City

 
Namesake: Daniel Webster, Massachusetts politician
Founding: 1854 (platting as Newcastle); 1855 (post office); 1874 (incorporation)
Population (2020): 7,825
Population (historic): 1,339 (1870); 2,829 (1890); 5,208 (1910); 7,024 (1930)
Periods of population growth: 1854–1930; 1940–1960; 1970s; 1990s
Pre-1940 residences (estimated): 1,170 (29.8%)
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Outstanding Buildings

1. Arthur Wagner Farm (c. 1880). 1614 Kantor Road. Cass. Italianate.
2. Kendall Young House (1863). 631 Kendall Young Road. Cass.