Dauphin Island, Alabama, United States [Town]; population was 824 in 1990; housing units was 1,211 in 1990; location is 30°15'N 88°10'W; land area is 6.07 square miles (3,883 acres); water area is 5.98 square miles (3,830 acres); FIPS code is 19744 [SourceCBP]