341 Area Code — Oakland, CA
Area code 341 serves Oakland and 2 other cities in California. Local time follows America/Los_Angeles. It overlays with 510, so 10-digit dialling is required.
- State
- California
- Primary city
- Oakland
- Timezone
- America/Los_Angeles
- In service since
- 2019
- Type
- Overlay
- Overlay codes
- 510
Overlay of 510
Cities Served by 341
The 341 area code covers 3 cities and communities in California.
- Oakland
- Berkeley
- Fremont
About Area Code 341
Area code 341 is a North American Numbering Plan (NANP) area code that has been in service since 2019. It is administered by NANPA on behalf of the FCC and serves the California region anchored on Oakland.
341 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (510). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 341 are portable: a person who moved away from Oakland may still carry a 341 mobile number on their device. If you receive an unexpected call from a 341 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in California, you may also interact with neighbouring or overlay codes (510). See the related codes section below to explore the rest of California.
Other California Area Codes
Continue exploring the California numbering plan.
341 Area Code FAQ
Where is area code 341?
Area code 341 is located in California, primarily serving Oakland and surrounding cities including Berkeley, Fremont. The region operates on PT (America/Los_Angeles) time.
What state is 341 area code?
341 is a California area code. It was put into service in 2019 as an overlay and shares its geographic footprint with overlay code 510.
Is 341 a scam area code?
341 is a legitimate North American area code allocated by NANPA to California. Like any geographic area code, scammers sometimes spoof 341 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 341 use?
Area code 341 operates on PT (America/Los_Angeles). Numbers in this area code follow standard California time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 341 phone number?
Yes. Use the reverse lookup widget above to enter a full 341 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 341 and 510?
341 and 510 cover the same California geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.