Area code 415
California · San Francisco, Marin County
- Area code
- 415
- Country
- United States
- Region
- California
- Major cities
- San Francisco, Marin County
- Time zone
- America/Los_Angeles
- Note
- San Francisco and nearby communities.
This is a domestic area code inside United States. It is not the international calling code.
Frequently asked questions
Which cities use area code 415?
Area code 415 serves California in United States, including San Francisco, Marin County.
What region does area code 415 cover?
Area code 415 covers California. Area codes route calls to a specific city or region within a country's national telephone network.
What is the difference between an area code and a calling code?
A calling code routes a call across borders to a national network, while an area code routes it to a city or region inside that network. For a United States number, the country calling code is the international prefix and 415 is the domestic area code.
What time zone is area code 415 in?
Area code 415 is in the IANA time zone America/Los_Angeles.
Is area code 415 the international calling code?
No. 415 is a domestic area code inside United States, not the international calling code. To call this region from abroad, you dial the country's calling code first, then 415 and the local number.