There is one unique ZIP code in Riverhead, New York and it is 11901. Area code: 631.
1
ZIP codes
56.70
sq mi land
4.78
sq mi water
631
area code
Riverhead, NY ZIP code map
About Riverhead, NY
Riverhead is a vibrant town located in Suffolk County, New York. Known for its rich history and charming community, Riverhead serves as a hub for culture and commerce on the East End of Long Island. The town perfectly balances small-town charm with easy access to urban amenities.
Location & geography
Riverhead is located on the eastern part of Long Island, bordered by the Peconic River to the north and the Atlantic Ocean to the south. It is situated approximately 25 miles east of Southampton and 60 miles east of New York City. The town covers a total area of 61.48 square miles, including 56.70 square miles of land and 4.78 square miles of water, offering a mix of coastal and inland terrain.
Community & economy
The character of Riverhead reflects a blend of agricultural heritage and modern suburban life. Major industries in the area include tourism, agriculture, and retail, with attractions like the Long Island Aquarium and the Tanger Outlets driving economic activity. Daily life in Riverhead is marked by a strong sense of community, with events and activities that celebrate local culture and history.
Transportation
Riverhead is conveniently accessible via major highways, including the Long Island Expressway (I-495) and Route 58, which facilitate travel to and from neighboring areas. The nearest airport is Long Island MacArthur Airport, located about 30 miles west. Public transportation is available through the Long Island Rail Road, offering connections to New York City and surrounding towns.
History
Founded in the 17th century, Riverhead has evolved from a farming community into a bustling town known for its agriculture and tourism. Key industries have historically included potato farming and more recently tourism, with the development of attractions like wineries and the aquarium. Notable events in the town's history include its incorporation in 1792 and the establishment of venues that have drawn visitors from across the region.
Did you know?
One surprising fact about Riverhead is that it is home to the only aquarium on Long Island, which showcases marine life from the region and around the world. Additionally, Riverhead has a vibrant arts scene, with various local galleries and cultural events that celebrate the creativity of its residents.
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions
What is the ZIP code for Riverhead, NY?
Riverhead, NY has one ZIP code: 11901.
What is the main ZIP code for Riverhead, NY?
The primary ZIP code for Riverhead, NY is 11901. The city uses area code 631 for phone service.
What county is Riverhead, NY in?
Riverhead is located in Suffolk County, New York.
How many ZIP codes are in Riverhead, NY?
Riverhead, NY has 1 ZIP code.
What is the ZIP code for downtown Riverhead and the surrounding business district?
Downtown Riverhead and its central business district are located in ZIP code 11901, which serves as the main commercial and civic hub of the city.
What ZIP code covers the Riverhead County Center and administrative offices area?
The Riverhead County Center, which houses Suffolk County administrative offices and courthouses, is located in ZIP code 11901 in the heart of the city.
Need the complete New York ZIP code database?Download all NY ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.