East Moriches, New York, United States [CDP]; population was 4,021 in 1990; housing units was 1,542 in 1990; location is 40°49'N 72°46'W; land area is 5.44 square miles (3,481 acres); water area is 0.15 square miles (95 acres); FIPS code is 22546 [SourceCBP]