Area code 351 covers Lowell and surrounding communities in Massachusetts.
Updated 8 October 2026
Area code 351 is in Massachusetts, shown here with Lowell marked.
Now in Lowell
Eastern Time · UTC−5, UTC−4 in summer
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Eastern Time
Where you are—
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Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real Lowell office is likely to answer. It says nothing about who called you.
Source: North American Numbering Plan Administrator, retrieved 8 October 2026.
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Is area code 351 a scam?
No. Area code 351 is a legitimate area code serving Lowell since 2001. Scammers spoof caller ID to display 351 numbers, which is why complaints exist against a code that is itself genuine.
Neighbour spoofing is the reason a local-looking number is not a guarantee. A caller anywhere in the world can display a 351 number, and the number they display may belong to a real business in Lowell that has nothing to do with the call.
The callerAnywhere in the worldSets the caller ID their equipment sends.
What is displayed(351) 204-5016May belong to a real Lowell business.
Your phoneLooks localA nearby code and prefix make you likelier to answer.
197Area code 351 had 197 different numbers reported for spam calls in the 30 days to 8 October 2026.
294thArea code 351 ranks 294th of 331 US geographic area codes by spam complaint volume.
82%Of the 210 complaints about area code 351 in the 30 days to 8 October 2026, 82% were reported as a recorded message or robocall.
47%The most reported subject on area code 351 is reducing your debt (credit cards, mortgage, student loans), appearing in 47% of its complaints in the 30 days to 8 October 2026.
Why am I getting text messages from area code 351?
Texts from 351 numbers follow the same pattern as calls — mostly local businesses and services. Treat any text asking for payment or credentials as suspect regardless of the code.
The common patterns are a wrong-number opener that turns into conversation, an unsolicited job offer, and a crypto or investment tip. Do not reply, do not follow the link, and forward the message to 7726 (SPAM) to report it to your carrier.
Pattern 1Wrong-number openerTurns into conversation.
Pattern 2Unsolicited job offerDo not reply, do not follow the link.
Pattern 3Crypto or investment tipTreat any payment ask as suspect.
Report it7726Forward the message. It spells SPAM on a keypad.
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Area codes that overlay 351
Area code 351 shares its geographic footprint with one other code: 978. Overlays are laid over an existing area rather than splitting it, so all local calls require the full ten-digit number.
Area code 351 overlays 978 across northeastern Massachusetts, with Lowell as its largest city. Lowell's mills made it the cradle of the American industrial revolution, and the National Historical Park downtown preserves that story, but the working economy has moved on to healthcare, higher education, and technology. Lowell General Hospital and its parent system Tufts Medicine are among the largest employers, UMass Lowell enrolls close to twenty thousand students and runs research programs in robotics and materials, and the Route 495 corridor around the city holds defense and tech employers, with Raytheon operations in nearby Andover and Tewksbury. Lowell, Massachusetts had a population of 118,368 and a median household income of $78,658 in 2024, per DataUSA.
Who lives in the 351 region
Lowell's people are the other half of the business story. The city is home to one of the largest Cambodian-American communities in the country, alongside substantial Portuguese, Spanish, and Khmer-speaking populations, and storefronts along Merrimack Street reflect it. A 351 number, introduced in 2001, sits beside 978 without much social distinction: callers describe Massachusetts customers as long since resigned to overlays and ten-digit dialing. Phone style in the Merrimack Valley is generally described as direct and quick, closer to Boston's pace than to rural New England's. Callers from outside should expect Eastern Time, short pleasantries, and an appreciation for getting to the point before the second sentence.
Area code 351 serves Lowell and surrounding communities in Massachusetts. It is in the Eastern Time zone.
What state is area code 351 in?
Area code 351 is in Massachusetts. It is not in Syracuse or Omaha or Cincinnati — those are area codes 315 and 531 and 513.
Is area code 351 toll free?
No. Area code 351 is a geographic area code serving Lowell, Massachusetts. The toll-free codes are 800, 833, 844, 855, 866, 877, 888, and a call to a 351 number is charged at your normal rate.
Why am I getting calls from 351?
Calls displaying a 351 number come from businesses and individuals in the Lowell area, and from anywhere at all when caller ID is spoofed to look local. 197 351 numbers were reported to the FTC in the 30 days to 8 October 2026.
How do I block calls from area code 351?
Both iOS and Android can silence calls from unknown numbers, and every major US carrier offers free call-blocking. Blocking the whole of area code 351 is rarely worth it, because spoofed numbers change constantly and you would lose legitimate calls from Lowell.