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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
Washington County is a county located in the U.S. state of Iowa. The population was 21,704 in the 2010 census, an increase from 20,670 in the 2000 census.[1][2] It is one of the two counties that make up the Iowa City, Iowa Metropolitan Statistical Area. The county seat is Washington.
Timeline
| Date | Event | Source
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| 1838 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1838 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1839 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1839 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1840 | 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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| 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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| 1840 | 1,594
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| 1850 | 4,957
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| 1860 | 14,235
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| 1870 | 18,952
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| 1880 | 20,374
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| 1890 | 18,468
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| 1900 | 20,718
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| 1910 | 19,925
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| 1920 | 20,421
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| 1930 | 19,822
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| 1940 | 20,055
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| 1950 | 19,557
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| 1960 | 19,406
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| 1970 | 18,967
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| 1980 | 20,141
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| 1990 | 19,612
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Research Tips
External links
www.rootsweb.com/~iawashin/
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