Where Is Area Code 415?
Area code 415 serves San Francisco County, most of Marin County, and a small portion of northern San Mateo County in Northern California. San Francisco is the primary city, while other communities include San Rafael, Novato, Mill Valley, Sausalito, and Brisbane.
The area covers the Golden Gate region around San Francisco Bay. Notable landmarks include the Golden Gate Bridge, Alcatraz Island, the Presidio, and the Marin Headlands. The Golden Gate Bridge connects San Francisco with Marin County.
Cities and Communities in the 415 Area Code
- San Francisco, San Francisco County
- Brisbane, San Mateo County
- Belvedere, Marin County
- Corte Madera, Marin County
- Fairfax, Marin County
- Larkspur, Marin County
- Mill Valley, Marin County
- Novato, Marin County
- Ross, Marin County
- San Anselmo, Marin County
- San Rafael, Marin County
- Sausalito, Marin County
- Tiburon, Marin County
History of Area Code 415
Area code 415 was established in 1947 as one of the original area codes in the North American Numbering Plan. It originally covered a much larger part of Northern California than it covers today.
Area code 510 split from 415 in 1991, and area code 650 split from 415 in 1997. Area code 628 became an overlay for the 415 region in 2015. The overlay added new telephone numbers while allowing existing 415 numbers to remain in service.
Key Facts About Area Code 415
- Area code 415 is a geographic area code in California, and San Francisco is its primary city.
- Area code 415 is located in the Pacific region of the United States Census Bureau.
- Area code 415 uses Pacific Time.
- Area code 415 was created in 1947 as an original North American Numbering Plan area code.
- Area code 628 has overlaid the 415 region since 2015.
- Area code 415 covers all of San Francisco County, most of Marin County, and a small part of San Mateo County.
- The 2020 U.S. Census counted 873,965 residents in San Francisco County, which lies entirely within the 415 and 628 telephone region.
- Major institutions in the area include the University of California, San Francisco, the University of San Francisco, and San Francisco State University.
Frequently Asked Questions
What state is area code 415 in?
Area code 415 is in California.
What major cities use area code 415?
San Francisco, San Rafael, Novato, Mill Valley, Sausalito, Larkspur, and Brisbane use numbers in the 415 region.
What time zone is area code 415 in?
Area code 415 is in Pacific Time.
Is area code 415 a toll-free number?
No. Area code 415 is a geographic area code, not a toll-free code.