Area Codes for San Francisco, California

While San Francisco proper currently has only one area code, there are several area codes actively in use in greater San Francisco metropolitan area, including: 415, 650, 510, 408. These area codes cover San Francisco proper as well as nearby suburbs and towns, including Oakland, Fremont, San Jose, Palo Alto, San Mateo, and San Rafael, among other locations. In addition, a large number of area codes are used in other parts of California.

In San Francisco, area codes are always included in written telephone numbers and area codes must be dialed for all calls, even for local calling. All US phone numbers are 10-digits total, including a 3-digit area code and a 7-digit local subscriber number.

San Francisco area code information:

• Area codes in & near San Francisco
• Area codes by town
• Lookup area codes
• San Francisco area code maps

Area codes are used to route phone calls to a specific geographic area within a country. All area codes in the United States are exactly 3-digits long.

In the past, a given region often had just one area code. Nowadays, many cities and towns in denser urban areas, including San Francisco, have 2 or more area codes.

To make an inbound international call (or domestic long distance call) to a San Francisco landline or mobile phone, you need to dial the appropriate 3-digit area code, followed by a 7-digit local subscriber number.

If you don't have a fully specified 10-digit phone number, including area code, you will not be able to complete an inbound call.

Lookup San Francisco phone numbers

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Lookup San Francisco Area Codes

To find the area codes (or ZIP codes) used in the San Francisco Bay Area, please use the WhitePages.com search widgets. The first widget looks up area codes and ZIP codes by town. The second widget does reverse lookup by area code or ZIP code.

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San Francisco, California Area Code Maps

The following maps show area codes for San Francisco and the state of California.

San Francisco Area Code Map

Source: WhitePages.com Area Code Maps

California Area Code Map

Source: WhitePages.com Area Code Maps

Maps may not be completely up to date. Check other map links below if this appears out of date.

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City Codes vs. Area Codes

In some cases, area codes may be referred to as city codes. However, a 'city code' more correctly refers to the codes used to designate airports and other geographic locations. These codes are issued under the United Nation's UN/LOCODE system and/or the IATA airport coding system. The city code for San Francisco is SFO.

Other Area Code Information

• NANPA - area codes search
• NANPA - USA area code maps
• Verizon - USA area code maps
• WhitePages.com - USA area code maps
• NANPA - US national area code map
• NANPA - planned area code changes

San Francisco online telephone directories

San Francisco dialing steps