Aquia Harbour, Virginia, United States [CDP]; population was 6,308 in 1990; housing units was 2,021 in 1990; location is 38°28'N 77°23'W; land area is 5.29 square miles (3,384 acres); water area is 0.03 square miles (20 acres); FIPS code is 2112 [SourceCBP]