Pupukea, Hawaii, United States [CDP]; population was 4,111 in 1990; housing units was 1,488 in 1990; location is 21°40'N 158°3'W; land area is 3.40 square miles (2,175 acres); water area is 2.69 square miles (1,725 acres); FIPS code is 66800 [SourceCBP]