The 415 area code covers San Francisco, San Rafael and 9 more places in California.
Area code 415 is in California, on Pacific Time. In the 415 area, phone numbers are given out most in the City and County of San Francisco, then Marin County. It has been in service since 1947. 628 covers the same area, so two neighbours can have different area codes.
- Where
- City and County of San Francisco and Marin County, California
- Time zone
- Pacific Time
- In service since
- 1947, one of the original area codes
- Shares its area with
- 628 (since 2015)
- Prefixes in use
- 785
- How to dial
- Local calls need 1, then the area code, then the number: 1-415-555-0142.
Find out who called you from a 415 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (415) number is on today, use our free carrier lookup.
Works for US & Canada numbers. Enter a 10-digit number, e.g. (415) 555-0132.
Free & rate-limited. No signup required to try.
San Francisco holds 76% of the phone prefixes in area code 415.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 785 prefixes in use shows where 415 numbers are actually given out.
- San Francisco600 prefixes, 76%
- San Rafael62 prefixes, 8%
- Novato34 prefixes, 4%
- Sausalito18 prefixes, 2%
- Mill Valley16 prefixes, 2%
- Belvedere Tiburon15 prefixes, 2%
- Corte Madera13 prefixes, 2%
- Point Reyes Station8 prefixes, 1%
Also served: Stinson Beach, Nicasio and Inverness.
Pacific Bell (AT&T) holds the most phone number prefixes in area code 415: 327 of 785.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 785 prefixes in use in 415 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Pacific Bell (AT&T)AT&T's landline company | 327 | 42% |
| AT&T MobilityMobile network | 67 | 9% |
| Level 3 (Lumen)Lumen's business and wholesale network | 48 | 6% |
| T-MobileMobile network | 45 | 6% |
| BandwidthSupplies numbers to VoIP and app-based phone services | 35 | 4% |
| Metro by T-MobileT-Mobile's prepaid brand | 22 | 3% |
| 23 other carriers | 241 | 31% |
63% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
415 has been split 5 times and overlaid once since 1947.
1947
415 is one of the original North American area codes.
1958
209 splits off and takes part of the 415 area.
1959
408 and 707 split off and take part of the 415 area.
1991
On September 2, 1991, 510 splits off and takes part of the 415 area.
1997
On August 2, 1997, 650 splits off and takes part of the 415 area.
2015
On March 21, 2015, 628 is added on top of 415, so new numbers here can get either code.
A 415 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 415 are 510, 650 and 925.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
California has 40 other area codes.
These are the questions people ask most about area code 415.
Where is area code 415?
415 covers San Francisco, San Rafael, Novato and Sausalito and 7 more places in California. In the 415 area, phone numbers are given out most in the City and County of San Francisco, then Marin County.
What state is area code 415 in?
California. 415 is a California area code on Pacific Time.
What cities use area code 415?
The places holding the most 415 prefixes are San Francisco, San Rafael, Novato, Sausalito, Mill Valley, Belvedere Tiburon, Corte Madera and Point Reyes Station, out of 11 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 415?
No single phone company owns 415. NANPA's records show Pacific Bell (AT&T) holds the most 415 prefixes, 327 of 785, followed by AT&T Mobility and Level 3 (Lumen). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 415 in?
415 is on Pacific Time.
When did area code 415 start?
415 is one of the original North American area codes, in service since 1947.
Is 415 the same area as 628?
Yes. 628 (since 2015) covers the same ground as 415. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 415 number?
Local calls need 1, then the area code, then the number: 1-415-555-0142.
Is 415 a toll-free number?
No. 415 is a regular area code for San Francisco and San Rafael in California, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 415?
The closest are 510/341 (Oakland, California), 650 (Palo Alto, California), 925 (Walnut Creek, California) and 408/669 (San Jose, California), measured between the centres of each area.
Who called me from a 415 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 415 a scam?
415 is a real California area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.