The Ultimate Guide to the 415 Area Code
| Country | United States of America (USA) |
| State | California |
| Major City | San Francisco |
| Major County | San Francisco |
| Time Zone | Pacific Time Zone (PT) |
| Standard Time | UTC/GMT-8:00 |
| Daylight Saving Time | UTC/GMT-7:00 |
| ZIP Code | 94005-94998 |
What is Area Code 415?
The 415 area code is one of the original telephone codes initially allocated by the North American Numbering Plan Administrator (NANPA) in 1947 for northern and central California, including San Francisco and Marin counties.
Where is 415 Area Code Located?
The 415 area code is located in San Francisco, California, United States. It extends to 17 cities, including San Francisco, Oakland, Novato, Mill Valley, Daly City, and San Rafael. 415 serves four counties, including San Francisco, Alameda, Marin, and San Mateo County. It serves the entire San Francisco county and portions of Marin and the San Mateo counties.
It primarily serves the regions of San Francisco and its surrounding areas in the northern part of the 650 area code. Some of the cities and counties served by this area code are mentioned below, along with their populations.
History of Area Code 415
Area code 415 is one of the earliest area codes that was introduced in 1947. It was assigned to serve northern/central California, with San Francisco and Sacramento as major areas. It used to serve massive areas of California, but it became smaller in 1950 when the boundaries were redrawn.
However, in 1997, due to population growth, 415 was split, creating a separate 650 area code. The most recent addition to this area code is the 628 area code, which was added as an overlay to 415 on February 21, 2015. Today, California has 38 area codes.
What Time Zone is the Area Code 415 In?
This 415 area code follows the Pacific time zone, which is also known as America/Los_Angeles time zone. Time here is usually 8 hours behind the Coordinated Universal Time (UTC) or the Greenwich Mean Time (GMT). This area observes daylight saving time from early November to early March, which falls 7 hours behind the GMT or UTC.
Dialing Format for 415 Area Code
The dialing format to reach a 415 area code phone number is:
For local calls, simply dial the phone number with a 3-digit central office code and a 4-digit subscriber number (e.g., XXX-XXXX).
For long-distance calls within the country, dial the country code for USA, ‘+1’, area code 415, and phone number (e.g., +1-415-XXX-XXXX), or simply dial the area code and phone number (e.g., 415-XXX-XXXX).
For international calls, dial your country’s exit code; 1 is the US country code and area code, followed by the phone number (e.g., 011-1-415-XXX-XXXX). Here, 011 is the exit code of the caller’s country.
Top 2 Counties in Area Code 415
- San Francisco
- Marin
Top 12 Cities in Area Code 415
| San Francisco | Mill Valley |
| Oakland | Larkspur |
| Daly City | San Anselmo |
| San Rafael | Corte Madera |
| Novato | Inverness |
| Fairfax | Brisbane |
ZIP Codes in Area Code 415
| ZIP Code | City |
|---|---|
| 94005 | Brisbane |
| 94014, 94016 | Daly City |
| 94102-94127, 94129-94134, 94137, 94139-94147, 94151, 94158-94161, 94163, 94164, 94172, 94177, 94188 | San Francisco |
| 94901, 94903, 94912-94914 | San Rafael |
| 94904 | Greenbrae |
| 94914 | Kentfield |
| 94920 | Belvedere |
| 94924 | Bolinas |
| 94925, 94976 | Corte Madera |
| 94930, 94978 | Fairfax |
| 94933 | Forest Knolls |
| 94937 | Inverness |
| 94938 | Lagunitas |
| 94939, 94977 | Larkspur |
| 94940 | Marshall |
| 94941, 94942 | Mill Valley |
| 94945, 94947-94949, 94998 | Novato |
| 94946 | Nicasio |
| 94950 | Olema |
| 94956 | Point Reyes Station |
| 94957 | Ross |
| 94960, 94979 | San Anselmo |
| 94963 | San Geronimo |
| 94964, 94974 | San Quentin |
| 94965, 94966 | Sausalito |
| 94970 | Stinson Beach |
| 94973 | Woodacre |
Nearby Area Codes
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Frequently Asked Questions
When we talk to clients about our IT services for their company, a few of the same questions come up.
What time zone is the 415 area code in the US?
The 415 area code is located in the Pacific Time Zone. Standard time is 8 hours behind the Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC).
Who is calling from the 415 area code?
A call with a 646 phone number is probably from a business or resident with a San Francisco phone number.
What cities are in area code 415?
This 415 phone code covers some of the major cities, including San Francisco, Oakland, San Rafael, Mill Valley, Novato, and Inverness.
Is 415 an area code in Canada?
No, 415 is not an area code in Canada. It is the local telephone code for San Francisco, California, in the US.
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