Greater Upper Marlboro, Maryland, United States [CDP]; population was 11,528 in 1990; housing units was 3,614 in 1990; location is 38°50'N 76°45'W; land area is 37.20 square miles (23,806 acres); water area is 0.27 square miles (172 acres); FIPS code is 34712 [SourceCBP]
