Home › California › 341

341 Area Code

Area code 341 serves Oakland, Hayward, Berkeley, Richmond, San Leandro and nearby communities in California. It has been in service since July 22, 2019, when it was split from 510.

StateCalifornia
Time zonePacific
Local time now…
Prefixes in use113
Overlay with510
Projected to run out2073
OaklandHaywardBerkeleyRichmondSan LeandroAlamedaCastro ValleyUnion CitySan PabloSan LorenzoHerculesEl CerritoAshlandAlbanyPinoleEl SobranteCherrylandEmeryvillePiedmontFairviewRodeoFranklinKensingtonOaklandHaywardBerkeleyRichmond
Cities and towns served by area code 341

Who issues 341 numbers

Mobile 26%VoIP and cable 36%Landline 38%

Share of the 113 prefixes (the three digits after 341) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
Fractel33
Onvoy (Sinch)26
AT&T Mobility12
T-Mobile12
Bandwidth8
Verizon Wireless5
Sonic Telecom4
Telnyx2

Cities and towns in area code 341

CityPopulationOther area codes
Oakland440,838510
Hayward157,113510
Berkeley121,911510
Richmond114,861510
San Leandro85,353510
Alameda76,876510
Castro Valley65,389510
Union City65,282510
San Pablo31,678510
San Lorenzo29,453510
Hercules26,326510
El Cerrito26,121510
Ashland22,784510
Albany19,195510
Pinole18,543510
El Sobrante15,823510
Cherryland14,575510
Emeryville13,251510
Piedmont10,642510
Fairview10,033510
Rodeo8,735510
Franklin7,487510
Kensington5,292510

Got a call from 341?

A 341 number was originally issued in California, but that does not prove the caller is there. 36% of 341 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 113 prefixes in area code 341

Format: (341) 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 341

Where is area code 341?
Area code 341 is in California. It covers Oakland, Hayward, Berkeley, Richmond, San Leandro, Alameda and 17 more cities and towns.
What time zone is area code 341?
Area code 341 is in the Pacific time zone.
Is 341 a toll-free number?
No. 341 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 341 share its area with 510?
341 and 510 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 341 run out of numbers?
NANPA's latest forecast projects the 341/510 overlay to exhaust in the fourth quarter of 2073. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in California