Greater Upper Marlboro is an area located in Prince George's County, Maryland, in the United States. It serves as the surrounding region for Upper Marlboro, which functions as the county seat.
The area was previously designated as a census-designated place (CDP) with a recorded population of 18,720 during the 2000 census. By the 2010 census, the region was divided into several smaller CDPs, including portions of Marlboro Meadows, Brock Hall, Marlboro Village, Queenland, and Croom.