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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
Union County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 62,784. Its county seat is Marysville. Its name is reflective of its origins, it being the union of portions of Franklin, Delaware, Madison, and Logan counties.
Union County is part of the Columbus, OH Metropolitan Statistical Area.
Timeline
Date | Event | Source
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1811 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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1820 | County formed | Source:Red Book: American State, County, and Town Sources
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1820 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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1820 | First census | Source:Population of States and Counties of the United States: 1790-1990
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1820 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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1820 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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1820 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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1867 | 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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1820 | 1,996
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1830 | 3,192
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1840 | 8,422
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1850 | 12,204
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1860 | 16,507
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1870 | 18,730
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1880 | 22,375
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1890 | 22,860
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1900 | 22,342
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1910 | 21,871
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1920 | 20,918
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1930 | 19,192
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1940 | 20,012
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1950 | 20,687
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1960 | 22,853
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1970 | 23,786
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1980 | 29,536
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1990 | 31,969
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Research Tips
External links
www.co.union.oh.us/
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