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350 Area Code

Area code 350 serves Stockton, Modesto, Tracy, Merced, Manteca and nearby communities in California. It has been in service since November 28, 2022, when it was split from 209.

StateCalifornia
Time zonePacific
Local time now…
Prefixes in use88
Overlay with209
Projected to run out2056
StocktonModestoTracyMercedMantecaTurlockLodiLos BanosCeresLathropAtwaterGaltPattersonRiverbankMountain HouseOakdaleRiponSalidaNewmanWintonGarden AcresCountry ClubWaterfordAugustHughsonEscalonRancho CalaverasGustineDos PalosWest ModestoMcSwainKeyesJacksonYosemite LakesDenairStocktonModestoTracyMercedTurlockLodi
Cities and towns served by area code 350

Who issues 350 numbers

Mobile 27%VoIP and cable 58%Landline 15%

Share of the 88 prefixes (the three digits after 350) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
Onvoy (Sinch)37
AT&T Mobility12
Commio7
T-Mobile7
Terra Nova Telecom7
Verizon Wireless5
Comcast (Xfinity)2
AT&T (Teleport)2

Cities and towns in area code 350

CityPopulationOther area codes
Stockton324,597209
Modesto219,652209
Tracy101,901209
Merced99,724209
Manteca96,693209
Turlock72,864209
Lodi69,100209
Los Banos49,614209
Ceres48,982209
Lathrop42,783209
Atwater32,133209
Galt26,964209
Patterson26,587209
Riverbank26,557209
Mountain House25,315209
Oakdale23,246209
Ripon16,140209
Salida14,457209
Newman12,453209
Winton11,429209
Garden Acres10,417209
Country Club10,017209
Waterford9,258209
August8,471209
Hughson8,051209
Escalon7,394209
Rancho Calaveras6,619209
Gustine6,112209
Dos Palos5,697209
West Modesto5,633209
McSwain5,556209
Keyes5,330209
Jackson5,100209
Yosemite Lakes5,095209
Denair5,085209

Got a call from 350?

A 350 number was originally issued in California, but that does not prove the caller is there. 58% of 350 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 88 prefixes in area code 350

Format: (350) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 350

Where is area code 350?
Area code 350 is in California. It covers Stockton, Modesto, Tracy, Merced, Manteca, Turlock and 29 more cities and towns.
What time zone is area code 350?
Area code 350 is in the Pacific time zone.
Is 350 a toll-free number?
No. 350 is a geographic area code in California. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 350 share its area with 209?
209 and 350 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 350 run out of numbers?
NANPA's latest forecast projects the 209/350 overlay to exhaust in the first quarter of 2056. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in California