What is area code 415?

Area code 415 is a California telephone area code serving the city and county of San Francisco, as well as several other cities in Marin County and San Mateo County. It was created in 1947 as one of the original area codes in California.

Some of the cities served by area code 415 include San Francisco, Sausalito, Mill Valley, Tiburon, San Rafael, Daly City, South San Francisco, and San Bruno. The 415 area code is located in the Pacific Time Zone.

In 2015, a new area code, 628, was introduced as an overlay for the 415 area code due to the increasing demand for telephone numbers in the region. This means that new phone numbers in the area may be assigned a 628 area code instead of 415.