Lake Purdy, Alabama, United States [CDP]; population was 1,840 in 1990; housing units was 1,291 in 1990; location is 33°26'N 86°41'W; land area is 3.04 square miles (1,947 acres); water area is 0.03 square miles (18 acres); FIPS code is 40806 [SourceCBP]