St. Andrews, South Carolina, United States [CDP]; population was 25,692 in 1990; housing units was 11,818 in 1990; location is 34°3'N 81°6'W; land area is 7.95 square miles (5,091 acres); water area is 0.11 square miles (72 acres); FIPS code is 62395 [SourceCBP]