South Sanford, Maine, United States [CDP]; population was 3,929 in 1990; housing units was 1,635 in 1990; location is 43°24'N 70°43'W; land area is 22.78 square miles (14,576 acres); water area is 0.67 square miles (426 acres); FIPS code is 72200 [SourceCBP]