Mableton, Georgia, United States [CDP]; population was 25,725 in 1990; housing units was 10,293 in 1990; location is 33°49'N 84°34'W; land area is 21.08 square miles (13,491 acres); water area is 0.17 square miles (110 acres); FIPS code is 48288 [SourceCBP]