Find the last 4 digits (ZIP+4) for an address in 11787

ZIP 11787, Smithtown, NY is filled in. Just type the street address.

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ZIP Code 11787 – Smithtown, NY

Smithtown, New York · Suffolk County · Eastern time

ZIP code11787
CitySmithtown
StateNew York
CountySuffolk County
Population34,499
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area14.9 sq mi
Center (lat, long)40.8529, -73.2113

Area codes in this area

631934

These are the area codes that most often serve ZIP 11787 (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

11788 Hauppauge · 2.4 mi11754 Kings Park · 3 mi11767 Nesconset · 3.4 mi11725 Commack · 3.7 mi11749 Islandia · 3.8 mi11780 Saint James · 4.5 mi11722 Central Islip · 4.8 mi11755 Lake Grove · 4.9 mi

About ZIP 11787

ZIP code 11787 is assigned to Smithtown, New York. It lies in Suffolk County. Its Census area covers about 14.9 square miles of land. The closest neighboring ZIP is 11788 (Hauppauge), about 2.4 miles away.

Every address in 11787 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