Upper Marlboro, Maryland

Upper Marlboro, Maryland
Town of Upper Marlboro
The Upper Marlboro courthouse under renovation in 2008.
Motto: 
"Where the Star Spangled Banner began!"
Location of Upper Marlboro, Maryland
Coordinates: 38°48′59″N 76°45′12″W / 38.81639°N 76.75333°W / 38.81639; -76.75333
CountryUnited States
StateMaryland
CountyPrince George's
Settled1695
Established1706 (as Marlborough Town)
Replatted1744 (as Upper Marlborough)
Incorporated1870
Founded byKingdom of England
Named afterJohn Churchill, 1st Duke of Marlborough
Government
  TypeCommission
Area
  Total
0.74 sq mi (1.91 km2)
  Land0.69 sq mi (1.79 km2)
  Water0.05 sq mi (0.12 km2)
Elevation
23 ft (7 m)
Population
 (2020)
  Total
652
  Density946.30/sq mi (365.17/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP Codes
20772, 20773, 20792
Area codes301, 240
FIPS code24-79875
GNIS feature ID0598208
Websitewww.uppermarlboromd.gov

Upper Marlboro, officially the Town of Upper Marlboro, is 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.