The area code 415 is a telephone area code in the North American Numbering Plan (NANP) for the city of San Francisco. The area code is one of the original area codes assigned to California in 1947. It originally covered only San Francisco itself; by 1950 it had been extended to Marin County and parts of Sonoma and Contra Costa counties.
What Are the Largest Telephone Carriers for the 415 Area Code
The area code 415 is served by the following telephone carriers: AT&T, Verizon, T-Mobile, and Sprint. These carriers provide service to area code 415 and its surrounding areas.
What Is the History of Area Code 415?
Area code 415 is one of the original California area codes assigned in 1947. In 1991, area code 415 was split to form area code 650 for most of San Francisco's northern suburbs, and area code 510 for the eastern portion of the East Bay. Area code 415 was then reduced to its current size in 1998 when area code 283 was assigned for overlay purposes.
Today, the 415 area code is used for all of San Francisco, Marin County, and parts of Sonoma County. It is also used for the Farallon Islands, which are part of San Francisco. The area code is also used for a small portion of Contra Costa County.
How Many People Use the 415 Area Code?
As of 2021, the 415 area code is used by approximately 7.8 million people. This includes all of San Francisco, Marin County, and parts of Sonoma County. It also includes the Farallon Islands, which are part of San Francisco. A small portion of Contra Costa County also uses the 415 area code.
What Time Zone Is Area Code 415?
The area code 415 is in the Pacific Time Zone. This includes all of California, parts of Idaho, Nevada, Oregon, and Washington.
Is the 415 Area Code Toll-Free?
No. The cost for calling area code 415 varies depending on the telephone carrier you use and your calling plan. Some carriers may charge a flat rate for all calls to area code 415, while others may charge a per-minute rate.
What Are Area Codes and Prefix Codes?
An area code is a three-digit code that is used to designate a specific geographic area. A prefix code is a three-digit code that is used to designate a specific exchange within an area.