857 Area Code

About Area Code 857

Area Code: 857
City: Belmont
State: Massachusetts
County: Middlesex
Time Zone: America/New_York
Latitude / Longitude: 42.348581818182, -71.100127272727

Area code 857 is located in the United States and is used in the region around Belmont, Massachusetts. It currently serves approximately 11 cities across 1 states.

In this dataset, area code 857 covers parts of Massachusetts. Major cities using this area code include Belmont, Brookline, Cambridge, Chelsea, Everett, Milton, Newton, Quincy, Somerville, South Boston, and 1 more.

Cities in Area Code 857

Below is a list of cities that use area code 857 in this dataset:

• Belmont
• Brookline
• Cambridge
• Chelsea
• Everett
• Milton
• Newton
• Quincy
• Somerville
• South Boston
• Watertown

Counties / Regions Covered

Area code 857 covers the following counties or regions:

• Middlesex
• Norfolk
• Suffolk

Location and Coordinates

The approximate central location for area code 857 is near latitude 42.348581818182 and longitude -71.100127272727. Individual city coordinates vary within the area code's coverage:

• Belmont, Massachusetts (lat 42.39593, lng -71.17867)
• Brookline, Massachusetts (lat 42.33176, lng -71.12116)
• Cambridge, Massachusetts (lat 42.3751, lng -71.10561)
• Chelsea, Massachusetts (lat 42.39176, lng -71.03283)
• Everett, Massachusetts (lat 42.40843, lng -71.05366)
• Milton, Massachusetts (lat 42.24954, lng -71.06616)
• Newton, Massachusetts (lat 42.33704, lng -71.20922)
• Quincy, Massachusetts (lat 42.25288, lng -71.00227)
• Somerville, Massachusetts (lat 42.3876, lng -71.0995)
• South Boston, Massachusetts (lat 42.33343, lng -71.04949)
• Watertown, Massachusetts (lat 42.37093, lng -71.18283)

Time Zone Information

Based on the underlying city data, area code 857 is used in the following time zone(s): America/New_York.

Related Area Code Pages

Explore related area code pages on Burning Compass:

• All area codes in Massachusetts
• Area codes for the city of Belmont
• Area codes in Middlesex