350 Area Code — Stockton, CA
Area code 350 serves Stockton and 2 other cities in California. Local time follows America/Los_Angeles. It overlays with 209, so 10-digit dialling is required.
- State
- California
- Primary city
- Stockton
- Timezone
- America/Los_Angeles
- In service since
- 2022
- Type
- Overlay
- Overlay codes
- 209
Overlay of 209
Cities Served by 350
The 350 area code covers 3 cities and communities in California.
- Stockton
- Modesto
- Tracy
About Area Code 350
Area code 350 is a North American Numbering Plan (NANP) area code that has been in service since 2022. It is administered by NANPA on behalf of the FCC and serves the California region anchored on Stockton.
350 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (209). 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 350 are portable: a person who moved away from Stockton may still carry a 350 mobile number on their device. If you receive an unexpected call from a 350 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 (209). See the related codes section below to explore the rest of California.
Other California Area Codes
Continue exploring the California numbering plan.
350 Area Code FAQ
Where is area code 350?
Area code 350 is located in California, primarily serving Stockton and surrounding cities including Modesto, Tracy. The region operates on PT (America/Los_Angeles) time.
What state is 350 area code?
350 is a California area code. It was put into service in 2022 as an overlay and shares its geographic footprint with overlay code 209.
Is 350 a scam area code?
350 is a legitimate North American area code allocated by NANPA to California. Like any geographic area code, scammers sometimes spoof 350 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 350 use?
Area code 350 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 350 phone number?
Yes. Use the reverse lookup widget above to enter a full 350 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 350 and 209?
350 and 209 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.