Gresham Park, Georgia, United States [CDP]; population was 9,000 in 1990; housing units was 3,039 in 1990; location is 33°42'N 84°19'W; land area is 2.83 square miles (1,812 acres); water area is 0.00 square miles (1 acres); FIPS code is 35240 [SourceCBP]