Get a local business phone number in Riverhead, NY

What area code is Riverhead, NY?

Riverhead town is a Census town in Suffolk County, New York, with an estimated 36,067 residents in 2024. NANPA lists 56 exchanges for its rate center across 2 area codes; 631 has the most (40, 71%). 631 is part of an overlay with 934, so a new local number in Riverhead may carry any of those codes depending on which have numbers available. Riverhead is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 631 are dialed as ten digits (area code plus number) and toll calls as ten digits (area code plus number).

Who holds Riverhead phone exchanges

18 carriers hold the 56 exchanges assigned to Riverhead's rate center. New Cingular Wireless PCS, LLC - DC has the most, with 16. 45 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.

Riverhead phone prefixes

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Riverhead's rate center (RIVERHEAD). The earliest assignment date recorded in the file for these codes is 2001. 18 of the 56 were assigned in 2020 or later.

When Riverhead's exchanges were assigned

The table groups Riverhead's exchanges by the decade NANPA recorded them as assigned.

How local numbers work in Riverhead

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Riverhead's numbers are rated to the RIVERHEAD rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Riverhead number.

If your business already has a Riverhead number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Who does business near Riverhead

Riverhead is part of the New York-Newark-Jersey City, NY-NJ metro area, home to 19.9 million people in 2024. County Business Patterns counted 562,802 business establishments in the New York, NY-NJ metro area in 2023, employing 8,559,248 people. The largest sectors by establishment count are professional, scientific, and technical services (71,000), retail trade (70,682), and health care and social assistance (65,817).

Setting up a Riverhead business line

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in Riverhead is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

The comparison below uses 15 users, the rounded average establishment size in the New York, NY-NJ metro area. At list prices checked September 28, 2026, that is $374.25 a month on Ooma Office Pro and $450.00 on RingCentral RingEX Core. Callata comes to $299.00 a month for 15 users ($99 a month with 5 users included, then $20 per additional user), below both.