Area Code Overview

Area code 818 is a geographic telephone area code in California that went into service on January 7, 1984. The geographic regions covered by this area code overlay has a population of approximately 4,710,048.

Overlay and Dialing Rules

Area Code: 818
State: California
Type: General Purpose Code
In Service Date: January 7, 1984
Overlay Complex: 747/818
Local Dialing Plan: This area requires you to dial 1 and the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 818

This area code is ranked 31st out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 39.

6,759,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 818

Total assigned 6,759,000

Wireless

2,624,000 assigned

38.82%

Wireline and VoIP

3,565,000 assigned

52.74%

Other / Unclassified

570,000 assigned

8.43%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 818

Estimated assigned wireless phone numbers: 2,624,000

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

T-Mobile 1,082,000 (41.23%)

AT&T Wireless 769,000 (29.31%)

Verizon Wireless 713,000 (27.17%)

33 WIRELESS INC. 60,000 (2.29%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 818

Estimated assigned wireline and VoIP phone numbers: 3,565,000

AT&T 1,977,000 (55.46%)

Onvoy 314,000 (8.81%)

Bandwidth 286,000 (8.02%)

Verizon 280,000 (7.85%)

Lumen 238,000 (6.68%)

TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 96,000 (2.69%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 87,000 (2.44%)

Spectrum 78,000 (2.19%)

PAETEC ITEL, LLC 71,000 (1.99%)

Peerless Network 47,000 (1.32%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 36,000 (1.01%)

UTILITY TELECOM GROUP, LLC - CA 28,000 (0.79%)

Other / Unclassified Assigned Numbering in Area Code 818

Estimated assigned other or unclassified phone numbers: 570,000

SPOK, INC. 230,000 (40.35%)

AMERICAN MESSAGING SERVICES, LLC 150,000 (26.32%)

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 88,000 (15.44%)

TELEPORT COMMUNICATIONS AMERICA, LLC - CA 35,000 (6.14%)

NORTH COUNTY COMMUNICATION CORPORATION - CA 20,000 (3.51%)

IP HORIZON LLC 17,000 (2.98%)

SHELCOMM 10,000 (1.75%)

CURATEL, LLC - CA 6,000 (1.05%)

HD CARRIER LLC 6,000 (1.05%)

CONNECTTO COMMUNICATIONS, INC. - CA 4,000 (0.70%)

INTEGRATED PATH COMMUNICATIONS, LLC - CA 2,000 (0.35%)

AIRESPRING, INC. 1,000 (0.18%)

Cities and Towns in Area Code 818

Agoura, California Burbank, California Canoga Park, California Glendale, California La Crescenta, California Los Angeles, California North Hollywood, California Northridge, California Pasadena, California Reseda, California San Fernando, California Van Nuys, California

These geographic regions are also served by area code 747.

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 818, 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