San Francisco, California

Where Is Area Code 415?

Area code 415 serves San Francisco and parts of Marin County in Northern California. It covers the city and county of San Francisco and a group of communities north of the Golden Gate Bridge. This area sits along the Pacific coast and the San Francisco Bay.

Major places in area code 415 include San Francisco, Sausalito, Mill Valley, San Rafael, Novato, and Tiburon. The code also serves communities such as Belvedere, Corte Madera, Fairfax, Larkspur, Ross, and Stinson Beach. Most of the area lies in San Francisco County and Marin County.

Notable landmarks in the 415 region include the Golden Gate Bridge, Alcatraz Island, and the Presidio in San Francisco. Marin County includes Mount Tamalpais and parts of Point Reyes National Seashore nearby, though not all nearby areas use 415. The region is known for dense urban neighborhoods, coastal hills, and bay shoreline.

History of Area Code 415

Area code 415 is one of the original North American area codes created in 1947. It first covered a much larger part of northern and central coastal California than it does today. As telephone demand grew, the area code was reduced through later splits.

Area code 415 was split in 1959 to create area code 707. It was split again in 1991, when most of the East Bay moved to area code 510. In 1997, most of the remaining North Bay portion moved to area code 650, leaving 415 focused on San Francisco and Marin County. Area code 628 began overlaying 415 in 2015, so both codes now serve the same geographic area.

Key Facts About Area Code 415

• Area code 415 is in California, and its best-known city is San Francisco.
• Area code 415 uses the Pacific Time Zone, which includes Pacific Standard Time and Pacific Daylight Time.
• Area code 415 is one of the original area codes introduced in 1947 in the North American Numbering Plan.
• Area code 415 now serves San Francisco and much of Marin County, including cities such as San Rafael, Novato, Mill Valley, and Sausalito.
• Area code 415 is overlaid by area code 628, and 10-digit dialing applies across the same service area.
• The Golden Gate Bridge connects San Francisco and Marin County within the 415 service region.
• Major institutions in the 415 area include the University of San Francisco, San Francisco State University, and the University of California, San Francisco.
• The population served by 415 is not fixed, because area codes follow telephone numbering boundaries rather than city population counts.

Frequently Asked Questions

What state is area code 415 in?

Area code 415 is in California.

What major cities use area code 415?

Major cities and communities in area code 415 include San Francisco, San Rafael, Novato, Mill Valley, Sausalito, Tiburon, and Belvedere.

Is area code 415 a toll-free number?

No. Area code 415 is a geographic area code, not a toll-free number.