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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.

Boundaries: Bounded north by Anne Arundel County; east & south by Chesapeake Bay; west by Patuxent River.
County Code
County Seat: Prince Frederick, MD 20678
Form of Government: County Commissioners
Population: 1990 census: 51,372; 2000 census: 74,563; 2010 census: 88,737


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U.S. Government Agencies

[photo, Calvert County Courthouse, Prince Frederick, Maryland] Calvert County Courthouse, 175 Main St., Prince Frederick, Maryland, September 2004. Photo by Diane F. Evartt.

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Health Dept.:
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Personnel Dept.:
Public Safety Dept.:
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Public Works Dept.:
Register of Wills:
Social Services Dept.:
State's Attorney:
Technology Services Dept.:

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 Maryland Manual On-Line, 2015

July 1, 2015

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