351 area code: location, overlays and numbers
In Boston, Massachusetts, area code 351 serves as a US telephone area code, in service since 2001, and shares an overlay with 978.
- Location
- Boston, Massachusetts
- Service start
- 2001
- Local time zone
- The Eastern time zone
- Overlay
- 978
- Calls in the area
- Full 10-digit dialling
- Rate centre locations
- 58
- Projected exhaustion
- More than 100 years in the future
- Country prefix
- +1 (United States)
Source: NANPA public reports, the area code report and the rate-centre report, file dated 11/01/2026; the exhaust year comes from the NANPA projections file 2026-1 (April 2026). We are not an official NANPA site.
Pick up a 351 number
A 351 number is available through two routes. With its plan, a provider hands you a new number, picked at sign-up from the pool it holds in the code. A seller offers numbers it already holds at a one-time price, often with a pattern. After buying one, you move it to a provider.
Providers listed by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers listing local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. First-year cost determines the order, which never changes. How we earn
Places in the 351 area code
For 351, NANPA lists 58 rate centres. Each one is a local calling area where numbers get assigned:
Winchendon, Wilmington, Westminster, Westford, West Newbury, Tyngsboro, Townsend, Topsfield, Templeton, Sudbury, Sterling, Shirley, Salem, Rowley, Rockport, Princeton, Petersham, Pepperell, Peabody, Orange, North Reading, Newburyport, Merrimac, Maynard, Manchester, Lunenburg, Lowell, Littleton, Leominster, Lawrence, Ipswich, Hudson, Hubbardston, Haverhill, Harvard, Hamilton, Groton, Gloucester, Georgetown, Gardner, Fitchburg, Essex, Danvers, Concord, Clinton, Bolton, Billerica, Beverly, Berlin, Barre, Ayer, Athol Franklin County, Athol, Ashby, Ashburnham, Andover, Amesbury, Acton.
Other related area codes
Same area and same pool of numbers: 978. A new number in this area may use any of these codes, so tell the provider which one you want.
Massachusetts also uses 413, 617, 508, 781, 339, 774 and 857.
351 area code questions
Which area is served by area code 351?
Around Boston-Cambridge-Newton, MA-NH, 351 rings in Boston, Massachusetts.
Which country code applies to a 351 number?
+1. Because 351 belongs to the North American Numbering Plan, from abroad you dial +1 351 and then the 7-digit number.
What time is it in the 351 area code?
351 stays on Eastern time.
Who calls with a 351 number?
Homes, mobiles and local businesses hold numbers in this code, and so do people who fake a local number. The 351 number shown on your screen tells you where it was assigned, not who is calling.