Area code lookup
What area code is 631?
Here's everything about it.
Instant lookup for the 631 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
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Caller ID · NPA-NXX-XXXXLive
Area code
631
Location
Suffolk County, NY
Local time
--:--:-- --
Suffolk County
631 at a glance
SummaryState
New York
Time zone
Eastern (ET)
UTC offset
UTC−5 / −4 DST
Observes DST
Yes
Country
United States
Cities served by 631
Suffolk CountySuffolk County
Where 631 sits on the map
No overlayCoverage area
About the 631 region
631 covers Suffolk County in New York. It currently has no overlay code, so seven-digit dialing may still be possible within the region.
Who called me from 631?
Community reportsNo community reports for 631 numbers yet. Be the first to report one.
Got a call from 631 that isn't listed?
Frequently asked questions
FAQWhat area code is 631?+–
631 is a telephone area code serving Suffolk County in New York, United States.
Where is area code 631 located?+–
It covers Suffolk County in New York.
What time zone is 631?+–
631 observes Eastern (ET), which is UTC−5 / −4 DST and follows daylight saving time.
Can I get a 631 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 631 number regardless of where you physically live.