351 Area CodeLowell, MA
Area code 351 covers Lowell and nearby communities in Massachusetts, in the Eastern Time (ET) zone, home to about 809,000 people across 45 cities. It overlays 978, so the same region uses both and every local call needs all ten digits.
Where is area code 351?
Area code 351 serves part of Lowell, MA and the surrounding areas. It has a single overlay (978) that serves the same area.
Overview of the 351 Area Code
What is the 351 area code?
The 351 area code serves Lowell, Massachusetts, alongside other established area codes. When you see a 351 number, it indicates a local number within this geographic area.
Why was area code 351 created?
The 351 area code was introduced as an overlay to add numbers in Lowell once the existing area code 978 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 351 Area Code
The 351 area code serves Lowell and surrounding areas in Massachusetts. It operates within the Eastern Time (ET) time zone. It complements the coverage of area code 978. This area code covers several key cities, including:
- Lowell
- Lawrence
- Haverhill
- Peabody
- Methuen Town
- Salem
Got a call from a 351 number? It came from Lowell, MA. Since 351 overlays with 978, every local call in the region needs all ten digits to land on the right line. Inside 351, Lowell holds about 15% of the population; the rest is split across 44 smaller cities.
Lowell Area Codes Overview
Lowell is served by multiple area codes, reflecting its telecommunications needs. The 351 area code operates alongside 978. Here are the area codes serving this region:
The introduction of the 351 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 351 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Lowell | MA | 120,418 | 1% | 100% |
| Lawrence | MA | 89,332 | 0% | 100% |
| Haverhill | MA | 68,291 | 2% | 100% |
| Peabody | MA | 55,418 | 1% | 100% |
| Methuen Town | MA | 47,255 | 1% | 100% |
| Salem | MA | 45,677 | 1% | 100% |
| Leominster | MA | 44,209 | 2% | 100% |
| Beverly | MA | 43,223 | 1% | 100% |
| Fitchburg | MA | 42,145 | 1% | 100% |
| Gloucester | MA | 30,491 | 2% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 351 been reported for unwanted calls?
Yes – 407 unwanted-call complaints were reported to the FTC for numbers showing a 351 area code (May 29 – Jul 2, 2026).
- 84% robocalls
- ↓ 6% vs prior period
Most-reported subjects
- Reducing your debt (credit cards, mortgage, student loans)56%227
- Other29%120
- Calls pretending to be government, businesses, or family and friends5%20
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 351?
8% assigned to a telco
- 90% Landline
- 10% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (351)200- | Landline | Tc Systems |
| (351)201- | Wireless | Sprint Spectrum |
| (351)202- | Landline | Peerless Network Of Massachusetts |
| (351)203- | Landline | Bandwidth.Com Clec |
| (351)204- | Wireless | Sprint Spectrum |
| (351)205- | Landline | Peerless Network Of Massachusetts |
| (351)206- | Landline | Peerless Network Of Massachusetts |
| (351)207- | Landline | Comcast Ip Phone |
| (351)208- | Wireless | Verizon Wireless |
| (351)209- | Landline | Exiant Communications |
Frequently Asked Questions about the 351 Area Code
Who called me from a 351 number?
A 351 number is assigned to Lowell, Massachusetts, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 351 code to look nearby, so a 351 number doesn't prove the caller is local. Recently, 407 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (84% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 351 a scam area code?
No area code is a scam on its own. 351 is a normal, officially assigned code for Lowell, Massachusetts. Spam callers spoof local codes to raise the odds you answer, so 351 on your caller ID says nothing about who is really calling. Recently, 407 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (84% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 351 area code?
Repeated calls from different 351 numbers are usually spoofing: a robocaller rotates through 351 numbers so each call looks local and slips past simple blocks. Recently, 407 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (84% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 351 number?
If you aren't expecting a 351 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 351 area code?
Block a single 351 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 351 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 351?
Area code 351 covers Lowell and the surrounding area in Massachusetts, spanning 45 cities with about 808,693 residents. It shares its area with overlay code 978.
Is 351 a real area code?
Yes. 351 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Lowell, Massachusetts. A real code can still show up on spoofed spam calls, so treat unknown 351 calls with normal caution.
What timezone is the 351 area code in?
The 351 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 351 caller may not be in that zone.
How do I call a 351 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 351 and the seven-digit number. From a mobile phone you can usually just enter +1 351 followed by the number and let the phone add the exit code for you.