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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
St. Clair County is a county in the U.S. state of Michigan. As of the 2010 census, the population was 163,040 according to the U.S. Census Bureau, it forms part of the Metro Detroit area. Geographically, it lies in the Thumb area of Michigan. The county seat is Port Huron. The county was created 10 September 1820 and its government was organized in 1821.[1]
Timeline
| Date | Event | Source
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| 1820 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1821 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1828 | Probate 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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| 1833 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1837 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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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 | 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 | 1,114
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| 1840 | 4,606
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| 1850 | 10,420
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| 1860 | 26,604
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| 1870 | 36,661
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| 1880 | 46,197
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| 1890 | 52,105
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| 1900 | 55,228
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| 1910 | 52,341
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| 1920 | 58,009
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| 1930 | 67,563
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| 1940 | 76,222
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| 1950 | 91,599
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| 1960 | 107,201
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| 1970 | 120,175
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| 1980 | 138,802
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| 1990 | 145,607
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Research Tips
External links
www.rootsweb.com/~mistcla/index.html
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