Parris Island, South Carolina, United States [CDP]; population was 7,172 in 1990; housing units was 333 in 1990; location is 32°20'N 80°42'W; land area is 12.16 square miles (7,786 acres); water area is 7.44 square miles (4,761 acres); FIPS code is 54857 [SourceCBP]