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Calvert County

Content Provided by: Maryland State Archives
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

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