What area code is 339?
Here's everything about it.
Instant lookup for the 339 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
339 at a glance
Summary
Cities & regions served by 339
Boston suburbs (overlay)Showing 12 of 55 recorded communities — major cities first.
Where 339 sits on the map
Overlay of 781Coverage area
About the 339 region
339 covers Boston suburbs in Massachusetts, including Essex, Middlesex, Norfolk, Plymouth and Suffolk. The code has been in service since 2001.
339 itself is an overlay: it shares its territory with 781 and was introduced when those codes ran low on new number combinations. New lines may receive either code, calls between them are local, and 10-digit dialing is required across the region.
Overlaid on 781.
Who called me from 339?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 339 does not prove the caller is really in the 339 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 339 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 339 number below.
Frequently asked questions
FAQWhat area code is 339?+–
339 is a telephone area code serving Boston suburbs in Massachusetts, United States, in service since 2001.
Where is area code 339 located?+–
It covers Essex County, Middlesex County, Norfolk County and other counties, including Essex, Middlesex, Norfolk, Plymouth and Suffolk in Massachusetts.
What cities are in area code 339?+–
Major communities on record include Essex, Middlesex, Norfolk, Plymouth and Suffolk, among others. The code's territory spans the Boston suburbs region of Massachusetts.
What time zone is 339?+–
339 observes Eastern (ET), which is UTC−5 / −4 DST and follows daylight saving time.
When did area code 339 start?+–
339 entered service in 2001. Its history: overlaid on 781.
Why does area code 339 exist?+–
339 is an overlay of 781: it covers the exact same territory and was introduced when the original code ran low on new number combinations. New lines may receive either code, calls between them are local, and 10-digit dialing applies.
Is 339 a scam area code?+–
Scam and robocall traffic can use any North American code, 339 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 339 number, and report anything suspicious.
Can I get a 339 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 339 number regardless of where you physically live, although in an overlaid region you may be assigned 781 instead.