631 Area Code
New York, USA
Local time now · Eastern Time
3:46 AM
Area code 631 is in New York, USA, serving Brookhaven, Islip, Oyster Bay and Babylon. It uses Eastern Time — the time there now is 3:46 AM. 934 is an overlay for the same area, so local calls need 10-digit dialing. In service since 1999.
| Area code | 631 |
|---|---|
| Location | New York, USA |
| Major cities | Brookhaven, Islip, Oyster Bay, Babylon, Huntington, Smithtown, Southampton, Riverhead |
| Time zone | Eastern Time |
| Overlay codes | 934 |
| In service since | 1999 |
| Dialing | 1+10 digit permissible at service provider discretion |
Other area codes in New York
212315329332347363465516518585607624646680716718838845914917929
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Frequently asked questions
Where is area code 631?
New York, USA — including Brookhaven, Islip, Oyster Bay, Babylon and Huntington.
What time zone is area code 631?
Eastern Time.
How do I call a 631 number from abroad?
Dial your international access code, then 1 (the country code), then 631 and the 7-digit number — for example +1 631 555 0100. From the UK or India dial 00 1 631 …; from Bangladesh 00 1 631 … .
Is a call from 631 a scam?
Not by itself — 631 is an ordinary geographic area code in New York. Numbers can be spoofed, so be careful with unexpected calls asking for money or personal details.
Sources: North American Numbering Plan Administrator (NANPA) NPA database (10/25/2026); major cities from Wikidata (CC0). An area code shows where a number was first assigned — with number portability and mobile phones, the caller may be anywhere.