Upper Marlboro, officially the Town of Upper Marlboro, is the seat of Prince George's County, Maryland, United States. Greater Upper Marlboro is an area of Prince George's County, Maryland, United States, that completely surrounds Upper Marlboro. The area includes Marlboro Meadows, Brock Hall, Marlboro Village, Queenland, and Croom.
Upper Marlboro has a population of over 673 people. Upper Marlboro also forms part of the Greater Upper Marlboro area which has a population of over 18,720 people.
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