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415 Area Code

Area code 415 serves San Francisco, San Rafael, Novato, Mill Valley, Larkspur and nearby communities in California. It has been in service since January 1, 1947.

StateCalifornia
Time zonePacific
Local time now…
Prefixes in use786
Overlay with628
Projected to run out2072
San FranciscoSan RafaelNovatoMill ValleyLarkspurSan AnselmoTamalpais-Homestead ValleyCorte MaderaTiburonFairfaxKentfieldSausalitoLucas Valley-MarinwoodStrawberrySan FranciscoSan RafaelNovato
Cities and towns served by area code 415

Who issues 415 numbers

Mobile 21%VoIP and cable 25%Landline 55%

Share of the 786 prefixes (the three digits after 415) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
AT&T (Pacific Bell)328
AT&T Mobility67
Verizon Wireless48
Lumen (Level 3)48
T-Mobile45
Verizon Business (MCImetro)44
Onvoy (Sinch)40
Bandwidth35

Cities and towns in area code 415

CityPopulationOther area codes
San Francisco826,079628
San Rafael59,410628
Novato51,947628
Mill Valley13,799628
Larkspur12,620628
San Anselmo12,555628
Tamalpais-Homestead Valley12,153628
Corte Madera9,929628
Tiburon8,881628
Fairfax7,417628
Kentfield7,128628
Sausalito7,019628
Lucas Valley-Marinwood6,331628
Strawberry5,496628

Got a call from 415?

A 415 number was originally issued in California, but that does not prove the caller is there. 25% of 415 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 786 prefixes in area code 415

Format: (415) 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 415

Where is area code 415?
Area code 415 is in California. It covers San Francisco, San Rafael, Novato, Mill Valley, Larkspur, San Anselmo and 8 more cities and towns.
What time zone is area code 415?
Area code 415 is in the Pacific time zone.
Is 415 a toll-free number?
No. 415 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 415 share its area with 628?
415 and 628 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 415 run out of numbers?
NANPA's latest forecast projects the 415/628 overlay to exhaust in the fourth quarter of 2072. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in California