Area Code Lookup
What Area Code Is South San Francisco?
Area code 650 · California
South San Francisco uses area code 650. It is located in California.
Area Code Serving South San Francisco
Frequently Asked Questions
What area code is South San Francisco?
South San Francisco uses area code 650. It is located in California.
How do I call South San Francisco from outside the US?
To call South San Francisco from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-650-XXX-XXXX). The +1 is the country code for all NANPA countries.