351 Area Code — Lowell, MA
Area code 351 serves Lowell and 2 other cities in Massachusetts. Local time follows America/New_York. It overlays with 978, so 10-digit dialling is required.
- State
- Massachusetts
- Primary city
- Lowell
- Timezone
- America/New_York
- In service since
- 2001
- Type
- Overlay
- Overlay codes
- 978
Overlay of 978
Cities Served by 351
The 351 area code covers 3 cities and communities in Massachusetts.
- Lowell
- Lawrence
- Framingham
About Area Code 351
Area code 351 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 Lowell.
351 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (978). 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 351 are portable: a person who moved away from Lowell may still carry a 351 mobile number on their device. If you receive an unexpected call from a 351 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 (978). See the related codes section below to explore the rest of Massachusetts.
Other Massachusetts Area Codes
Continue exploring the Massachusetts numbering plan.
351 Area Code FAQ
Where is area code 351?
Area code 351 is located in Massachusetts, primarily serving Lowell and surrounding cities including Lawrence, Framingham. The region operates on ET (America/New_York) time.
What state is 351 area code?
351 is a Massachusetts area code. It was put into service in 2001 as an overlay and shares its geographic footprint with overlay code 978.
Is 351 a scam area code?
351 is a legitimate North American area code allocated by NANPA to Massachusetts. Like any geographic area code, scammers sometimes spoof 351 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 351 use?
Area code 351 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 351 phone number?
Yes. Use the reverse lookup widget above to enter a full 351 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 351 and 978?
351 and 978 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.