339 Area Code — Quincy, MA
Area code 339 serves Quincy and 3 other cities in Massachusetts. Local time follows America/New_York. It overlays with 781, so 10-digit dialling is required.
- State
- Massachusetts
- Primary city
- Quincy
- Timezone
- America/New_York
- In service since
- 2001
- Type
- Overlay
- Overlay codes
- 781
Overlay of 781
Cities Served by 339
The 339 area code covers 4 cities and communities in Massachusetts.
- Quincy
- Lynn
- Newton
- Brookline
About Area Code 339
Area code 339 is a North American Numbering Plan (NANP) area code that has been in service since 2001. It is administered by NANPA on behalf of the FCC and serves the Massachusetts region anchored on Quincy.
339 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (781). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 339 are portable: a person who moved away from Quincy may still carry a 339 mobile number on their device. If you receive an unexpected call from a 339 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Massachusetts, you may also interact with neighbouring or overlay codes (781). See the related codes section below to explore the rest of Massachusetts.
Other Massachusetts Area Codes
Continue exploring the Massachusetts numbering plan.
339 Area Code FAQ
Where is area code 339?
Area code 339 is located in Massachusetts, primarily serving Quincy and surrounding cities including Lynn, Newton, Brookline. The region operates on ET (America/New_York) time.
What state is 339 area code?
339 is a Massachusetts area code. It was put into service in 2001 as an overlay and shares its geographic footprint with overlay code 781.
Is 339 a scam area code?
339 is a legitimate North American area code allocated by NANPA to Massachusetts. Like any geographic area code, scammers sometimes spoof 339 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 339 use?
Area code 339 operates on ET (America/New_York). Numbers in this area code follow standard Massachusetts time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 339 phone number?
Yes. Use the reverse lookup widget above to enter a full 339 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 339 and 781?
339 and 781 cover the same Massachusetts geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.