857 area code

Get a local phone number in Boston, MA

Biggest city:

Boston

State:

Massachusetts

Major Cities:

Boston metropolitan area

Timezone:

Eastern (GMT -5)

Population:

692,600

Average Income:

$120,939

Zip codes:

2108

2222

Unemployment Rate:

2.60%

Nearby area codes:

339

781

Get a 857 phone number

📲 Get a 857 number: $7/mo

857 area code summary

Area code 857 is an overlay for the Boston, Massachusetts region, sharing territory with the long-established 617 area code. It includes neighborhoods and cities like Boston, Cambridge, Brookline, and Quincy — all central to New England’s economy, education, and culture. The 857 overlay was introduced in 2001 as 617 began to run out of available numbers, driven by the area’s dense population, tech expansion, and proliferation of mobile devices. Boston is home to some of the world's top universities (Harvard, MIT, BU), hospitals, venture capital firms, and biotech companies. Area code 857 offers full regional access to this highly competitive, innovative, and prestigious zone. It may not carry the same legacy feel as 617, but 857 numbers are just as functional and essential in modern communications across Greater Boston.

Fun fact 💡

Boston’s Boston Common, since 1634, is a 857 historic park.

🏢First Phone Company:

Verizon (successor to New England Telephone)

📲 Get a 857 number: $7/mo