Area Code Overview

Area code 350 is a geographic telephone area code in California that went into service on November 28, 2022. The geographic regions covered by this area code overlay has a population of approximately 2,474,054.

Overlay and Dialing Rules

Area Code: 350
State: California
Type: General Purpose Code
In Service Date: November 28, 2022
Overlay Complex: 209/350
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 350

This area code is ranked 343rd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 37th out of 39.

584,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 350

Total assigned 584,000

Wireless

250,000 assigned

42.81%

Wireline and VoIP

323,000 assigned

55.31%

Other / Unclassified

11,000 assigned

1.88%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 350

Estimated assigned wireless phone numbers: 250,000

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

Verizon Wireless 99,000 (39.60%)

AT&T Wireless 80,000 (32.00%)

T-Mobile 71,000 (28.40%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 350

Estimated assigned wireline and VoIP phone numbers: 323,000

Onvoy 157,000 (48.61%)

Spectrum 41,000 (12.69%)

Commio 38,000 (11.76%)

Peerless Network 25,000 (7.74%)

Bandwidth 15,000 (4.64%)

Telnyx 15,000 (4.64%)

NUSO 11,000 (3.41%)

TERRA NOVA TELECOM INC. 11,000 (3.41%)

Comcast Business 5,000 (1.55%)

AT&T 2,000 (0.62%)

LEAP TELECOM, LLC 1,000 (0.31%)

Lumen 1,000 (0.31%)

Other / Unclassified Assigned Numbering in Area Code 350

Estimated assigned other or unclassified phone numbers: 11,000

TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7,000 (63.64%)

HD CARRIER LLC 2,000 (18.18%)

EXIANT COMMUNICATIONS LLC 1,000 (9.09%)

WAVENATION, LLC 1,000 (9.09%)

Cities and Towns in Area Code 350

Angels Camp, California Atwater, California Catheys Valley, California Clements, California Copperopolis, California Coulterville, California Crows Landing, California Dos Palos, California Escalon, California Farmington, California Fresno, California Galt, California Groveland, California Gustine, California Herald, California Hornitos, California Hughson, California Ione, California Jackson, California Jamestown, California Jenny Lind, California Knights Ferry, California Le Grand, California Linden, California Livingston, California Lockeford, California Lodi, California Los Banos, California Manteca, California Mariposa, California Merced, California Milton, California Moccasin, California Modesto, California Mokelumne Hill, California Mount Bullion, California Newman, California Oakdale, California Patterson, California Pinecrest, California Pioneer, California Planada, California Plymouth, California Ripon, California Riverbank, California San Andreas, California San Ramon, California Snelling, California Sonora, California Stockton, California Sutter Creek, California Thornton, California Tracy, California Tuolumne, California Turlock, California Valley Springs, California Volcano, California Wallace, California Waterford, California West Point, California Yosemite National Park, California

These geographic regions are also served by area code 209.

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 350, 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