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- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Hamilton County is a county located in the U.S. state of Iowa. The population was 15,673 in the 2010 census, a decline from 16,438 in the 2000 census.[1][2] The county seat is Webster City. It was named in honor of William W. Hamilton, who served as President of the Iowa State Senate.
Timeline
| Date | Event | Source
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| 1854 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1857 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1857 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1860 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1860 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1865 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1868 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1880 | Birth records recorded | Source:Red Book: American State, County, and Town Sources
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Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year | Population
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| 1860 | 1,699
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| 1870 | 6,055
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| 1880 | 11,252
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| 1890 | 15,319
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| 1900 | 19,514
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| 1910 | 19,242
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| 1920 | 19,531
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| 1930 | 20,978
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| 1940 | 19,922
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| 1950 | 19,660
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| 1960 | 20,032
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| 1970 | 18,383
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| 1980 | 17,862
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| 1990 | 16,071
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Research Tips
External links
www.rootsweb.com/~iahamilt/
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