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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
Clay County is a county located in Northwest Missouri in the United States. As of the 2010 U.S. Census, the county had a population of 221,939, the seventh most populous county in the state. Its county seat is Liberty. The county was organized January 2, 1822 and named in honor of U.S. Representative Henry Clay from Kentucky, later member of the United States Senate and United States Secretary of State.
Clay County is part of the Kansas City Metropolitan Area and consists of many of the city's northern suburbs.
Timeline
| Date | Event | Source
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| 1821 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1822 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1822 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1822 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1822 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1830 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1840 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1883 | 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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| 1830 | 5,338
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| 1840 | 8,282
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| 1850 | 10,332
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| 1860 | 13,023
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| 1870 | 15,564
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| 1880 | 15,572
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| 1890 | 19,856
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| 1900 | 18,903
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| 1910 | 20,302
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| 1920 | 20,455
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| 1930 | 26,811
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| 1940 | 30,417
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| 1950 | 45,221
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| 1960 | 87,474
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| 1970 | 123,322
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| 1980 | 136,488
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| 1990 | 153,411
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Research Tips
External links
www.claycogov.com/
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