Cahaba Heights, Alabama, United States [CDP]; population was 4,778 in 1990; housing units was 2,229 in 1990; location is 33°28'N 86°44'W; land area is 2.09 square miles (1,335 acres); water area is 0.00 square miles (0 acres); FIPS code is 11248 [SourceCBP]