Area Code Overview

Area code 412 is a geographic telephone area code in Pennsylvania that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 1,662,262.

Overlay and Dialing Rules

Area Code: 412
State: Pennsylvania
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 412/724/878
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 412

This area code is ranked 110th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 15.

6,061,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 412

Total assigned 6,061,000

Wireless

2,371,000 assigned

39.12%

Wireline and VoIP

3,108,000 assigned

51.28%

Other / Unclassified

582,000 assigned

9.60%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 412

Estimated assigned wireless phone numbers: 2,371,000

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

Verizon Wireless 1,091,000 (46.01%)

AT&T Wireless 638,000 (26.91%)

AERIAL COMMUNICATIONS, INC. 551,000 (23.24%)

T-Mobile 81,000 (3.42%)

SCHUYLKILL MOBILE FONE, INC. 10,000 (0.42%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 412

Estimated assigned wireline and VoIP phone numbers: 3,108,000

VERIZON PENNSYLVANIA, INC. 1,443,000 (46.43%)

Onvoy 612,000 (19.69%)

Bandwidth 271,000 (8.72%)

Lumen 154,000 (4.96%)

Comcast Business 109,000 (3.51%)

PAETEC ITEL, LLC 105,000 (3.38%)

Peerless Network 97,000 (3.12%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 85,000 (2.73%)

Spectrum 84,000 (2.70%)

Telnyx 38,000 (1.22%)

YMAX COMMUNICATIONS CORP. - PA 28,000 (0.90%)

TERRA NOVA TELECOM INC. 25,000 (0.80%)

Other / Unclassified Assigned Numbering in Area Code 412

Estimated assigned other or unclassified phone numbers: 582,000

SPOK, INC. 240,000 (41.24%)

CORE COMMUNICATIONS, INC. - PA 81,000 (13.92%)

IP HORIZON LLC 72,000 (12.37%)

CONSOLIDATED COMMUNICATIONS ENTERPRISE SERVICES-PA 43,000 (7.39%)

TELEPORT COMMUNICATIONS AMERICA, LLC - PA 43,000 (7.39%)

CITYNET PENNSYLVANIA, LLC - PA 24,000 (4.12%)

FULL SERVICE NETWORK LP 23,000 (3.95%)

BARR TELL USA, INC. - PA 21,000 (3.61%)

HD CARRIER LLC 15,000 (2.58%)

SHELCOMM 10,000 (1.72%)

EXIANT COMMUNICATIONS LLC 3,000 (0.52%)

AHOI LLC 1,000 (0.17%)

Cities and Towns in Area Code 412

These geographic regions are also served by area codes 724 and 878.

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 412, 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