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Syosset

1. Syosset, New York, United States [CDP]; population was 18,967 in 1990; housing units was 6,342 in 1990; location is 40°49'N 73°30'W; land area is 4.98 square miles (3,189 acres); FIPS code is 72554 [SourceCBP]
2. Syosset, New York, United States [Populated Place] is in Nassau County; location is 40°49'34"N 73°30'9"W [SourceGSP]
3. Syosset, New York, United States Postal Service Zip Code is 11775 (Don Jagoda Assc Inc), 11791 [SourcePSZ]