Find the last 4 digits (ZIP+4) for an address in 11791

ZIP 11791, Syosset, NY is filled in. Just type the street address.

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ZIP Code 11791 – Syosset, NY

Syosset, New York · Nassau County · Eastern time

ZIP code11791
CitySyosset
StateNew York
CountyNassau County
Population25,520
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area12.51 sq mi
Center (lat, long)40.8278, -73.5028

Area codes in this area

516363

These are the area codes that most often serve ZIP 11791 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

11773 Syosset · 0.1 mi11797 Woodbury · 1.7 mi11732 East Norwich · 2.2 mi11853 Jericho · 3.1 mi11753 Jericho · 3.3 mi11771 Oyster Bay · 3.4 mi11724 Cold Spring Harbor · 3.5 mi11803 Plainview · 3.5 mi

About ZIP 11791

ZIP code 11791 is assigned to Syosset, New York. It lies in Nassau County. Its Census area covers about 12.51 square miles of land. The closest neighboring ZIP is 11773 (Syosset), about 0.1 miles away.

Every address in 11791 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources