351 Area CodeLowell, MA
Area code 351 covers Lowell and nearby communities in Massachusetts, in the Eastern Time (ET) zone, home to about 1,372,258 people across 45 cities. It was added in 2001 as an overlay of 978, so the same region uses both codes and every local call needs all ten digits.
Overview
- Major City
- Lowell
- State
- Massachusetts (MA)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 978
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?
Area code 351 went into service on May 2, 2001, as an overlay of 978. An overlay adds a second code to the same territory instead of splitting it: existing 978 numbers kept their digits, new lines began receiving 351 numbers, and local calls in the region require all ten 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. Of the listed cities' population, Lowell accounts for about 14.9%; 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 | Population in 351 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Lowell | MA | 120,418 | 120,418 | 14.9% | 100.0% |
| Lawrence | MA | 89,332 | 89,332 | 11.1% | 100.0% |
| Haverhill | MA | 68,291 | 68,291 | 8.4% | 100.0% |
| Peabody | MA | 55,418 | 55,418 | 6.9% | 100.0% |
| Methuen Town | MA | 47,255 | 47,255 | 5.8% | 100.0% |
| Salem | MA | 45,677 | 45,677 | 5.7% | 100.0% |
| Leominster | MA | 44,209 | 44,209 | 5.5% | 100.0% |
| Beverly | MA | 43,223 | 43,223 | 5.3% | 100.0% |
| Fitchburg | MA | 42,145 | 42,145 | 5.2% | 100.0% |
| Gloucester | MA | 30,491 | 30,491 | 3.8% | 100.0% |
| Danvers | MA | 26,493 | 26,493 | 3.3% | 100.0% |
| Wilmington | MA | 22,325 | 22,325 | 2.8% | 100.0% |
| Gardner | MA | 21,381 | 21,381 | 2.6% | 100.0% |
| Newburyport | MA | 19,163 | 14,578 | 2.4% | 76.1% |
| Amesbury Town | MA | 16,283 | 16,283 | 2.0% | 100.0% |
| Hudson | MA | 14,907 | 14,907 | 1.8% | 100.0% |
| Maynard | MA | 10,106 | 10,106 | 1.3% | 100.0% |
| Andover | MA | 8,762 | 8,762 | 1.1% | 100.0% |
| Athol | MA | 8,265 | 8,265 | 1.0% | 100.0% |
| Clinton | MA | 7,389 | 7,389 | 0.9% | 100.0% |
| Pinehurst | MA | 7,152 | 7,152 | 0.9% | 100.0% |
| West Concord | MA | 6,028 | 6,028 | 0.8% | 100.0% |
| Rockport | MA | 4,966 | 4,966 | 0.6% | 100.0% |
| Salisbury | MA | 4,869 | 4,869 | 0.6% | 100.0% |
| Ipswich | MA | 4,222 | 4,222 | 0.5% | 100.0% |
| Winchendon | MA | 4,213 | 4,213 | 0.5% | 100.0% |
| Orange | MA | 4,018 | 4,018 | 0.5% | 100.0% |
| Ayer | MA | 2,868 | 2,868 | 0.4% | 100.0% |
| Littleton Common | MA | 2,789 | 2,789 | 0.3% | 100.0% |
| Topsfield | MA | 2,717 | 2,717 | 0.3% | 100.0% |
| Pepperell | MA | 2,504 | 2,504 | 0.3% | 100.0% |
| Boxford | MA | 2,339 | 2,339 | 0.3% | 100.0% |
| East Pepperell | MA | 2,059 | 2,059 | 0.3% | 100.0% |
| Baldwinville | MA | 2,028 | 2,028 | 0.3% | 100.0% |
| South Lancaster | MA | 1,894 | 1,894 | 0.2% | 100.0% |
| Devens | MA | 1,840 | 1,840 | 0.2% | 100.0% |
| Lunenburg | MA | 1,760 | 1,760 | 0.2% | 100.0% |
| Essex | MA | 1,471 | 1,471 | 0.2% | 100.0% |
| Shirley | MA | 1,441 | 1,441 | 0.2% | 100.0% |
| Rowley | MA | 1,416 | 1,416 | 0.2% | 100.0% |
| Townsend | MA | 1,128 | 1,128 | 0.1% | 100.0% |
| Groton | MA | 1,124 | 1,124 | 0.1% | 100.0% |
| South Ashburnham | MA | 1,062 | 1,062 | 0.1% | 100.0% |
| Barre | MA | 1,009 | 1,009 | 0.1% | 100.0% |
| Petersham | MA | 243 | 243 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 351 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
What counties does area code 351 cover?
1,372,258 residents across 4 counties, counted inside the 351 boundary — a county split between codes contributes only its part.
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 351 been reported for unwanted calls?
Yes – 772 unwanted-call complaints were reported to the FTC for numbers showing a 351 area code (May 29 – Aug 14, 2026).
- 83% robocalls
- ↓ 21% vs prior period
Most-reported subjects
- Reducing your debt (credit cards, mortgage, student loans)55%428
- Other31%237
- Calls pretending to be government, businesses, or family and friends4%34
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 2026-08-17.
Which prefixes and exchanges belong to area code 351?
8% assigned to a telco
- 90% Landline
- 10% Wireless
- 0% Unknown
of 83 | ||
| 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 |
| (351)210- | Landline | Omnipoint Miami E License |
| (351)212- | Wireless | Verizon Wireless |
| (351)213- | Landline | Onvoy |
| (351)214- | Landline | Vonage America |
| (351)215- | Wireless | New Cingular Wireless Pcs |
| (351)216- | Wireless | New Cingular Wireless Pcs |
| (351)217- | Landline | Omnipoint Miami E License |
| (351)218- | Landline | Omnipoint Miami E License |
| (351)219- | Landline | Comcast Ip Phone |
| (351)220- | Landline | Omnipoint Miami E License |
| (351)221- | Landline | Commio |
| (351)222- | Landline | Onvoy |
| (351)223- | Landline | Onvoy |
| (351)224- | Landline | Onvoy |
| (351)225- | Landline | Onvoy |
| (351)226- | Landline | Five9 |
| (351)227- | Landline | Onvoy |
| (351)228- | Landline | Bandwidth.Com Clec |
| (351)229- | Landline | Bandwidth.Com Clec |
| (351)230- | Landline | Metropcs |
| (351)231- | Landline | Omnipoint Miami E License |
| (351)232- | Landline | Metropcs |
| (351)233- | Landline | Ton80 Communications |
| (351)234- | Landline | Fractel |
| (351)235- | Landline | Mcimetro Access Transmission Services |
| (351)236- | Landline | Idt America |
| (351)237- | Landline | Omnipoint Miami E License |
| (351)238- | Wireless | Dish Wireless |
| (351)239- | Wireless | Verizon Wireless |
| (351)247- | Landline | Tc Systems |
| (351)251- | Landline | Radiantiq |
| (351)252- | Landline | Onvoy |
| (351)253- | Landline | Radiantiq |
| (351)266- | Landline | Ton80 Communications |
| (351)277- | Landline | Omnipoint Miami E License |
| (351)300- | Landline | Onvoy |
| (351)322- | Landline | Omnipoint Miami E License |
| (351)333- | Landline | Voxbeam Telecommunications |
| (351)344- | Landline | Metropcs |
| (351)345- | Landline | Fractel |
| (351)350- | Landline | Metropcs |
| (351)352- | Landline | Onvoy Spectrum |
| (351)353- | Landline | Radiantiq |
| (351)354- | Landline | Radiantiq |
| (351)355- | Landline | Onvoy Spectrum |
| (351)356- | Landline | Fractel |
| (351)357- | Landline | Radiantiq |
| (351)358- | Landline | Radiantiq |
| (351)359- | Landline | Radiantiq |
| (351)361- | Landline | Onvoy Spectrum |
| (351)371- | Landline | Radiantiq |
| (351)377- | Landline | Metropcs |
| (351)388- | Landline | Onvoy Spectrum |
| (351)400- | Landline | Fractel |
| (351)426- | Landline | Ton80 Communications |
| (351)444- | Landline | Voxbeam Telecommunications |
| (351)465- | Landline | Fractel |
| (351)500- | Landline | Fractel |
| (351)501- | Landline | Onvoy Spectrum |
| (351)529- | Landline | Fractel |
| (351)588- | Landline | Ton80 Communications |
| (351)600- | Landline | Fractel |
| (351)666- | Landline | Onvoy |
| (351)667- | Landline | Fractel |
| (351)688- | Landline | Ton80 Communications |
| (351)746- | Landline | Ton80 Communications |
| (351)777- | Landline | Voxbeam Telecommunications |
| (351)800- | Landline | Fractel |
| (351)814- | Landline | Multiple Ocn Listing |
| (351)837- | Landline | Ton80 Communications |
| (351)888- | Landline | Voxbeam Telecommunications |
| (351)900- | Landline | Fractel |
| (351)999- | Landline | Voxbeam Telecommunications |
| No prefixes match “”. | ||
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, 772 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (83% 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, 772 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (83% 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, 772 unwanted-call complaints were reported to the FTC for numbers showing the 351 code (83% 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 1,372,258 residents. It shares its area with overlay code 978.
When did area code 351 go into service?
Area code 351 went into service on May 2, 2001. It was added as an overlay of 978, so 351 numbers serve the same area that 978 already covered.
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.