Leonardtown is a town in and the county seat of St. Mary's County, Maryland, United States. The population was 2,930 at the 2010 census. Leonardtown is perhaps most famous for the national oyster-shucking championship that is held annually at the St. Mary's County fairgrounds. Historic Leonardtown includes both a large public high school and a public middle school Leonardtown Middle School as well as a Catholic high school and an elementary school... Show more

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