Area code · Massachusetts
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The 857 area code covers Boston and the surrounding cities in eastern Massachusetts, including Cambridge, Quincy, and Newton. It reads as local to anyone in that part of the state. You pick 857 right in the Ghost app and start calling and texting in minutes.
If you're selling something online to people in Boston or Cambridge, a 857 number makes your listing feel like it's coming from someone nearby, not out of state.
A 857 number matches what people in Quincy, Newton, and Boston expect to see. It's one less reason for a match to hesitate before replying.
Recruiters and hiring managers around Lowell, Lynn, and Brockton tend to notice a local area code. It signals you're already in the area or planning to be.
If you're relocating to Fall River or anywhere else in the 857 region, you can get the number before you arrive and keep using it once you're settled.
Left Boston for another city but still doing business or staying in touch with people back in Cambridge or Newton? Keep your 857 number active from wherever you are now.
Use a second 857 number for job listings, side gigs, or online sales, and keep your main line for friends and family in the Boston area.
Choose any 857 area code, or any other US or Canadian code.
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Get My 857 NumberArea code
857
State
Massachusetts
Overlay codes
339, 351, 617, 781, 978
Cities served
12+
The 857 area code serves Boston and the cities around it, including Cambridge, Lowell, Brockton, Lynn, Quincy, Fall River, and Newton. It's one of the main area codes for the greater Boston region in eastern Massachusetts.
857 is an overlay code, meaning it shares the same geographic footprint as 617 rather than covering a separate area. The wider region is also served by 339, 351, 781, and 978, so you'll see several different area codes on phones in the same neighborhood.
The entire 857 region runs on Eastern time. Since overlay codes share the same physical area, callers in Boston, Cambridge, or Quincy dial the full number including area code even for local calls.
Coverage from public numbering and census data. Sources
Local economy
The 857 region covers Boston and the surrounding cities, a metro built around large hospital systems, universities, and a dense cluster of tech and biotech companies.
Boston and Cambridge are home to major hospital systems and research centers, drawing clinicians, researchers, and support staff from across the 857 region.
The area's universities and colleges bring in students, faculty, and staff year-round, many of whom need a local number while they're studying or working nearby.
Cambridge and Boston host a concentration of tech and biotech firms, and cities like Newton and Quincy provide housing for the workforce that supports them.
You can get one in the Ghost app in a few minutes. Pick 857, choose an available number, and it's ready to use for calling and texting.
857 covers Boston and nearby cities including Cambridge, Lowell, Brockton, Lynn, Quincy, Fall River, and Newton.
No. 857 overlays the same region as 617, and the wider metro is also served by 339, 351, 781, and 978. All of these can appear on numbers in the same area.
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Pick a 857 (or 339, 351, 617, 781, 978) number and start calling and texting in minutes.
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