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[County Seal, Calvert County, Maryland] Origin: In 1654, Calvert County was established by an Order in Council and called Patuxent County until 1658. The County name derives from the family name of Lord Baltimore, the Proprietary of the Maryland colony.

County Seat: Prince Frederick, MD 20678
Form of Government: County Commissioners

1990 census: 51,372
2000 census: 74,563

[photo, St. Leonard Creek, Calvert County, Maryland]
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  • St. Leonard Creek, Calvert County, Maryland, May 2002. Photo by Diane F. Evartt.


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     Maryland Manual On-Line, 2007

    July 6, 2007   
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