Area code 631 — New York
Area code 631 is in New York and serves Hauppauge, Riverhead. Time zone, overlays, counties and ZIP codes.
| Location | New York (Suffolk County on Long Island) |
|---|---|
| Main places | Hauppauge, Riverhead |
| State | New York |
| Status | In service · since 1999 |
| Time zone | Eastern · |
| Overlay codes | 934 Overlays share the same area. Local calls usually need 10-digit dialing. |
| Local dialing | 10 digits |
History
- Split of 516
- 2016: overlaid by 934
Counties (approximate)
SuffolkSuffolk County
ZIP codes in area code 631
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
00501 Holtsville00544 Holtsville06390 Fishers Island11703 North Babylon11704 West Babylon11705 Bayport11706 Bay Shore11707 West Babylon11713 Bellport11715 Blue Point11716 Bohemia11717 Brentwood11718 Brightwaters11719 Brookhaven11720 Centereach11721 Centerport11722 Central Islip11724 Cold Spring Harbor11725 Commack11727 Coram11729 Deer Park11730 East Islip11731 East Northport11733 East Setauket11738 Farmingville11739 Great River11740 Greenlawn11741 Holbrook11742 Holtsville11743 Huntington11746 Huntington Station11747 Melville11749 Islandia11751 Islip11752 Islip Terrace11754 Kings Park11755 Lake Grove11757 Lindenhurst11760 Melville11763 Medford
Format a 631 number
US numbers are written as (631) 555-0123 or 631-555-0123. From outside the US, dial +1 631 555 0123.
Is a call from 631 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.