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- the text in this section is copied from an article in Wikipedia
Blue Earth County is a county in the State of Minnesota. As of the 2020 census, the population was 69,112. Its county seat is Mankato. The county is named for the Blue Earth River and for the deposits of blue-green clay once evident along the banks of the Blue Earth River.
Blue Earth County is part of the Mankato-North Mankato metropolitan area.
Timeline
| Date | Event | Source
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| 1853 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1853 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1854 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1858 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1860 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1860 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1865 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1870 | 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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| 1860 | 4,803
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| 1870 | 17,302
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| 1880 | 22,889
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| 1890 | 29,210
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| 1900 | 32,263
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| 1910 | 29,337
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| 1920 | 31,477
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| 1930 | 33,847
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| 1940 | 36,203
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| 1950 | 38,327
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| 1960 | 44,385
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| 1970 | 52,322
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| 1980 | 52,314
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| 1990 | 54,044
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Cemeteries
Cemeteries of Blue Earth county, Minnesota
Research Tips
Resources
- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
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