857 area code is a telephone area code in the North American Numbering Plan (NANP) for the city of Boston, Massachusetts and the surrounding areas. The area code was created in 2001.
| Area Code | 857 |
|---|---|
| Major City | Boston |
| Service Date | 05/02/2001 |
| Time Zone | Eastern |
| Overlay Complex | 617/857 |
| Location | Massachusetts (MA) |
| Country | United States |
Some of the cities served by area code 857 include Boston, Cambridge, Quincy, Newton, Somerville, Brookline, Everett, Chelsea, Watertown Town and more.
| Area code | City/Town | County |
|---|---|---|
| 857 | Allston | Suffolk |
| 857 | Auburndale | Middlesex |
| 857 | Boston | Suffolk |
| 857 | Brighton | Suffolk |
| 857 | Brookline | Norfolk |
| 857 | Brookline Village | Norfolk |
| 857 | Cambridge | Middlesex |
| 857 | Charlestown | Suffolk |
| 857 | Chelsea | Suffolk |
| 857 | Chestnut Hill | Middlesex |
| 857 | East Boston | Suffolk |
| 857 | Everett | Middlesex |
| 857 | Hyde Park | Suffolk |
| 857 | Jamaica Plain | Suffolk |
| 857 | Mattapan | Suffolk |
| 857 | Milton | Norfolk |
| 857 | Milton Village | Norfolk |
| 857 | Needham Heights | Norfolk |
| 857 | New Town | Middlesex |
| 857 | Newton | Middlesex |
| 857 | Newton Center | Middlesex |
| 857 | Newton Highlands | Middlesex |
| 857 | Newton Lower Falls | Middlesex |
| 857 | Newton Upper Falls | Middlesex |
| 857 | Newtonville | Middlesex |
| 857 | Nonantum | Middlesex |
| 857 | North Waltham | Middlesex |
| 857 | Quincy | Norfolk |
| 857 | Readville | Suffolk |
| 857 | Roslindale | Suffolk |
| 857 | Somerville | Middlesex |
| 857 | Waban | Middlesex |
| 857 | Watertown | Middlesex |
| 857 | West Newton | Middlesex |
| 857 | West Roxbury | Suffolk |
| 857 | Winthrop | Suffolk |