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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. As of the 2020 census, the population was 22,565. The county seat is Washington.
Washington County is included in the Iowa City Metropolitan Statistical Area.
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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Cemeteries
Cemeteries of Washington County, Iowa, United States
Research Tips
External links
www.rootsweb.com/~iawashin/
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