Cabin John-Brookmont, Maryland, United States [CDP]; population was 5,341 in 1990; housing units was 2,168 in 1990; location is 38°58'N 77°9'W; land area is 2.61 square miles (1,670 acres); water area is 0.95 square miles (610 acres); FIPS code is 12087 [SourceCBP]