Find the last 4 digits (ZIP+4) for an address in 11749

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ZIP Code 11749 – Islandia, NY

Islandia, New York · Suffolk County · Eastern time

ZIP code11749
CityIslandia
StateNew York
CountySuffolk County
Population3,600
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area2.19 sq mi
Center (lat, long)40.8068, -73.1708

Area codes in this area

631934

These are the area codes that most often serve ZIP 11749 (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

11722 Central Islip · 2.1 mi11788 Hauppauge · 2.3 mi11716 Bohemia · 2.8 mi11779 Ronkonkoma · 3 mi11767 Nesconset · 3.1 mi11752 Islip Terrace · 3.3 mi11787 Smithtown · 3.8 mi11755 Lake Grove · 4.5 mi

About ZIP 11749

ZIP code 11749 is assigned to Islandia, New York. It lies in Suffolk County. Its Census area covers about 2.19 square miles of land. The closest neighboring ZIP is 11722 (Central Islip), about 2.1 miles away.

Every address in 11749 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