Setauket-East Setauket, New York, United States [CDP]; population was 13,634 in 1990; housing units was 4,595 in 1990; location is 40°56'N 73°6'W; land area is 8.46 square miles (5,414 acres); water area is 0.80 square miles (509 acres); FIPS code is 66481 [SourceCBP]