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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
Decatur County is a county located in the U.S. state of Iowa. The population was 8,457 in the 2010 census, a decline from 8,689 in the 2000 census.[1][2] The county seat is Leon. This county is named for Stephen Decatur, Jr., a hero in the War of 1812.
Timeline
| Date | Event | Source
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| 1846 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1850 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1850 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1851 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1871 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1871 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1874 | Marriage 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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| 1850 | 965
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| 1860 | 8,677
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| 1870 | 12,018
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| 1880 | 15,336
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| 1890 | 15,643
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| 1900 | 18,115
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| 1910 | 16,347
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| 1920 | 16,566
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| 1930 | 14,903
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| 1940 | 14,012
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| 1950 | 12,601
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| 1960 | 10,539
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| 1970 | 9,737
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| 1980 | 9,794
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| 1990 | 8,338
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Research Tips
External links
www.rootsweb.com/~iadecatu/
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