Area Code Lookup
What Area Code Is Redwood City?
Area code 650 · California
Redwood City uses area code 650. It is located in California.
Area Code Serving Redwood City
Frequently Asked Questions
What area code is Redwood City?
Redwood City uses area code 650. It is located in California.
How do I call Redwood City from outside the US?
To call Redwood City 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.