Home

856 Area Code

Area Code Overview

Area code 856 is a geographic telephone area code in New Jersey that went into service on June 12, 1999. The geographic regions covered by this area code overlay has a population of approximately 1,067,323.

Overlay and Dialing Rules

  • Area Code: 856
  • State: New Jersey
  • Type: General Purpose Code
  • In Service Date: June 12, 1999
  • Overlay Complex: 856
  • 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 856

This area code is ranked 159th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 6th out of 10.

5,383,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 856

Total assigned 5,383,000
Wireless
1,783,000 assigned
33.12%
Wireline and VoIP
3,170,000 assigned
58.89%
Other / Unclassified
430,000 assigned
7.99%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 856

Estimated assigned wireless phone numbers: 1,783,000

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

T-Mobile 777,000 (43.58%)
AT&T Wireless 641,000 (35.95%)
Verizon Wireless 362,000 (20.30%)
Optimum Mobile 3,000 (0.17%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 856

Estimated assigned wireline and VoIP phone numbers: 3,170,000

VERIZON NEW JERSEY, INC. 1,096,000 (34.57%)
Onvoy 680,000 (21.45%)
Bandwidth 305,000 (9.62%)
Comcast Business 235,000 (7.41%)
Lumen 155,000 (4.89%)
PAETEC ITEL, LLC 124,000 (3.91%)
Spectrum 120,000 (3.79%)
Peerless Network 115,000 (3.63%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 79,000 (2.49%)
Commio 60,000 (1.89%)
TERRA NOVA TELECOM INC. 54,000 (1.70%)
Telnyx 39,000 (1.23%)

Other / Unclassified Assigned Numbering in Area Code 856

Estimated assigned other or unclassified phone numbers: 430,000

CORETEL NEW JERSEY, INC. - NJ 112,000 (26.05%)
IP HORIZON LLC 70,000 (16.28%)
SPOK, INC. 70,000 (16.28%)
BLOCK LINE SYSTEMS, LLC - NJ 68,000 (15.81%)
HD CARRIER LLC 39,000 (9.07%)
TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 18,000 (4.19%)
TON80 COMMUNICATIONS, LLC 12,000 (2.79%)
FRACTEL, LLC 11,000 (2.56%)
AQUIS COMMUNICATIONS, INC. 10,000 (2.33%)
THE VOICE APPLICATION NETWORK, LLC 9,000 (2.09%)
BARR TELL USA, INC. - NJ 2,000 (0.47%)
FIVE9, INC. 2,000 (0.47%)

Cities and Towns in Area Code 856

Berlin, New Jersey Blackwood, New Jersey Bridgeton, New Jersey Camden, New Jersey Cedarville, New Jersey Collingswood, New Jersey Elmer, New Jersey Franklinville, New Jersey Glassboro, New Jersey Gloucester County, New Jersey Haddon Heights, New Jersey Haddonfield, New Jersey Laurel Springs, New Jersey Marlton, New Jersey Merchantville, New Jersey Millville, New Jersey Moorestown, New Jersey Mullica Hill, New Jersey Paulsboro, New Jersey Penns Grove, New Jersey Pitman, New Jersey Port Norris, New Jersey Riverside, New Jersey Riverton, New Jersey Salem, New Jersey Swedesboro, New Jersey Vineland, New Jersey Wenonah, New Jersey Williamstown, New Jersey Woodbury, New Jersey Woodstown, New Jersey

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 856, 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