Socastee, South Carolina, United States [CDP]; population was 10,426 in 1990; housing units was 4,179 in 1990; location is 33°41'N 79°1'W; land area is 13.38 square miles (8,565 acres); water area is 0.53 square miles (340 acres); FIPS code is 67390 [SourceCBP]