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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
Johnson County is a county located in the U.S. state of Iowa. The population was 130,882 in the 2010 census, an increase from 111,006 in the 2000 census.[1][2] The county seat is Iowa City, the home of the University of Iowa. Johnson County is one of the two counties that make up the Iowa City, Iowa Metropolitan Statistical Area.
It is named for Richard Mentor Johnson, the ninth vice president of the United States.
Timeline
| Date | Event | Source
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| 1837 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1839 | Court 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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| 1839 | Probate 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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| 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 | 1,491
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| 1850 | 4,472
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| 1860 | 17,573
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| 1870 | 24,898
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| 1880 | 25,429
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| 1890 | 23,082
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| 1900 | 24,817
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| 1910 | 25,914
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| 1920 | 26,462
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| 1930 | 30,276
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| 1940 | 33,191
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| 1950 | 45,756
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| 1960 | 53,663
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| 1970 | 72,127
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| 1980 | 81,717
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| 1990 | 96,119
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Research Tips
External links
www.rootsweb.com/~iajohnso/
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