San Mateo, California
Pacific Time Zone (UTC-8) · CA · —
About Area Codes in San Mateo, California
San Mateo, California is served by area code 650, which was established in 1997 as a geographic split from a larger area code region. The city falls within the Pacific time zone (UTC-8). All calls to and from San Mateo use the 650 area code prefix for local and long-distance dialing.
Other cities in area code 650
Frequently Asked Questions
What area code is San Mateo, California?
San Mateo, California uses area code 650.
What time zone is San Mateo in?
San Mateo is in the Pacific time zone (UTC-8).
Do I need to dial 10 digits when calling San Mateo?
Standard 7-digit dialing is used for local calls within San Mateo. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 650 created?
Area code 650 was established in 1997 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 650 with San Mateo?
Other cities sharing area code 650 with San Mateo include Belmont, Burlingame, Daly City, Encourage City, Half Moon Bay, among others.
San Mateo, CA · Pacific Time Zone