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