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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
McLean County is the largest county in the U.S. state of Illinois. With a land area of 1184 square miles, it has more acreage than the state of Rhode Island. McLean County is included in the Bloomington–Normal, Illinois Metropolitan Statistical Area. As of 2000, the population was 150,433, which ranks 13th amongst Illinois counties. Its county seat is Bloomington, Illinois.
History
- the text in this section is copied from an article in Wikipedia
McLean County was formed late in 1830 out of Tazewell County. It was named for John McLean, United States Senator for Illinois, who died in 1830.
Timeline
| Date | Event | Source
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| 1830 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1831 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1831 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1831 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1831 | 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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| 1877 | 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 | 6,565
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| 1850 | 10,163
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| 1860 | 28,772
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| 1870 | 53,988
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| 1880 | 60,100
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| 1890 | 63,036
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| 1900 | 67,843
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| 1910 | 68,008
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| 1920 | 70,107
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| 1930 | 73,117
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| 1940 | 73,930
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| 1950 | 76,577
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| 1960 | 83,877
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| 1970 | 104,389
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| 1980 | 119,149
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| 1990 | 129,180
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Research Tips
External links
www.mclean.gov/
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