415 Area Code — San Francisco, CA
Area code 415 serves San Francisco and 2 other cities in California. Local time follows America/Los_Angeles. It overlays with 628, so 10-digit dialling is required.
- State
- California
- Primary city
- San Francisco
- Timezone
- America/Los_Angeles
- In service since
- 1947
- Type
- Geographic
- Overlay codes
- 628
Cities Served by 415
The 415 area code covers 3 cities and communities in California.
- San Francisco
- San Rafael
- Mill Valley
About Area Code 415
Area code 415 is a North American Numbering Plan (NANP) area code that has been in service since 1947. It is administered by NANPA on behalf of the FCC and serves the California region anchored on San Francisco.
415 now shares its territory with an overlay code (628). 10-digit dialling is required for local calls within this region because the same 7-digit number can be assigned under either code.
Mobile numbers in 415 are portable: a person who moved away from San Francisco may still carry a 415 mobile number on their device. If you receive an unexpected call from a 415 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 (628). See the related codes section below to explore the rest of California.
Other California Area Codes
Continue exploring the California numbering plan.
415 Area Code FAQ
Where is area code 415?
Area code 415 is located in California, primarily serving San Francisco and surrounding cities including San Rafael, Mill Valley. The region operates on PT (America/Los_Angeles) time.
What state is 415 area code?
415 is a California area code. It was put into service in 1947 and shares its geographic footprint with overlay code 628.
Is 415 a scam area code?
415 is a legitimate North American area code allocated by NANPA to California. Like any geographic area code, scammers sometimes spoof 415 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 415 use?
Area code 415 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 415 phone number?
Yes. Use the reverse lookup widget above to enter a full 415 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 415 and 628?
415 and 628 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.