Town guide
Upper Marlboro
Maryland · MD
About Upper Marlboro
Town in Maryland, United States1695Established
652Population
0.4 sq miArea
23 ftElevation
Upper Marlboro, officially the Town of Upper Marlboro, is a town in and the county seat of Prince George's County, Maryland, United States. As of the 2020 census, the population within the town limits was 652, although Greater Upper Marlboro, which covers a large area outside the town limits, is many times larger.
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ZIP code20772, 20773, 20774