Find the last 4 digits (ZIP+4) for an address in 11901

ZIP 11901, Riverhead, NY is filled in. Just type the street address.

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ZIP Code 11901 – Riverhead, NY

Riverhead, New York · Suffolk County · Eastern time

ZIP code11901
CityRiverhead
StateNew York
CountySuffolk County
Population33,091
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area56.7 sq mi
Center (lat, long)40.9281, -72.6482

Area codes in this area

631934

These are the area codes that most often serve ZIP 11901 (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

11931 Aquebogue · 1.4 mi11947 Jamesport · 3.6 mi11970 South Jamesport · 4.1 mi11948 Laurel · 5.6 mi11933 Calverton · 6.2 mi11942 East Quogue · 6.8 mi11959 Quogue · 7 mi11977 Westhampton · 7.1 mi

About ZIP 11901

ZIP code 11901 is assigned to Riverhead, New York. It lies in Suffolk County. Its Census area covers about 56.7 square miles of land. The closest neighboring ZIP is 11931 (Aquebogue), about 1.4 miles away.

Every address in 11901 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