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617 Area Code

Area Code Overview

Area code 617 is a geographic telephone area code in Massachusetts that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 2,390,696.

Overlay and Dialing Rules

  • Area Code: 617
  • State: Massachusetts
  • Type: General Purpose Code
  • In Service Date: January 1, 1947
  • Overlay Complex: 617/857
  • Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 617

This area code is ranked 97th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 1st out of 9.

6,178,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 617

Total assigned 6,178,000
Wireless
1,982,000 assigned
32.08%
Wireline and VoIP
3,842,000 assigned
62.19%
Other / Unclassified
354,000 assigned
5.73%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 617

Estimated assigned wireless phone numbers: 1,982,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

AT&T Wireless 722,000 (36.43%)
T-Mobile 691,000 (34.86%)
Verizon Wireless 558,000 (28.15%)
MASS MOBILE LLC 10,000 (0.50%)
MOBILESPHERE LLC 1,000 (0.05%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 617

Estimated assigned wireline and VoIP phone numbers: 3,842,000

VERIZON NEW ENGLAND INC. 2,349,000 (61.14%)
Onvoy 293,000 (7.63%)
PAETEC ITEL, LLC 237,000 (6.17%)
Bandwidth 231,000 (6.01%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 205,000 (5.34%)
Lumen 195,000 (5.08%)
Comcast Business 97,000 (2.52%)
Spectrum 81,000 (2.11%)
YMAX COMMUNICATIONS CORP. - MA 45,000 (1.17%)
TERRA NOVA TELECOM INC. 38,000 (0.99%)
Peerless Network 34,000 (0.89%)
Commio 15,000 (0.39%)

Other / Unclassified Assigned Numbering in Area Code 617

Estimated assigned other or unclassified phone numbers: 354,000

TC SYSTEMS, INC. 118,000 (33.33%)
NORFOLK COUNTY INTERNET, INC. 100,000 (28.25%)
AMERICAN MESSAGING SERVICES, LLC 30,000 (8.47%)
HD CARRIER LLC 29,000 (8.19%)
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 26,000 (7.34%)
IP HORIZON LLC 23,000 (6.50%)
FREEDOM RING COMMUNICATIONS, LLC 16,000 (4.52%)
NEP, LLC 10,000 (2.82%)
BARR TELL USA, INC. - MA 1,000 (0.28%)
INTRADO COMMUNICATIONS, LLC 1,000 (0.28%)

Cities and Towns in Area Code 617

Belmont, Massachusetts Boston, Massachusetts Brighton, Massachusetts Brookline, Massachusetts Cambridge, Massachusetts Charlestown, Massachusetts Chelsea, Massachusetts Dedham, Massachusetts Dorchester, Massachusetts East Boston, Massachusetts Everett, Massachusetts Hyde Park, Massachusetts Jamaica Plain, Massachusetts Kingston, Massachusetts Malden, Massachusetts Melrose, Massachusetts Milton, Massachusetts Newton, Massachusetts Quincy, Massachusetts Roxbury, Massachusetts Saugus, Massachusetts Somerville, Massachusetts South Boston, Massachusetts Waltham, Massachusetts Watertown, Massachusetts Weymouth, Massachusetts Winthrop, Massachusetts

These geographic regions are also served by area code 857.

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 617, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm