San Mateo County Area Codes

About San Mateo County Area Codes

The county of San Mateo County, located in California, is served by 4 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in San Mateo County include 415, 628, 650, 916. The county mainly follows the America/Los_Angeles time zone.

Cities and towns served by these area codes in San Mateo County include Belmont, Burlingame, Daly City, Foster City, Menlo Park, Millbrae, North Fair Oaks, Pacifica, Redwood City, San Bruno, San Carlos, San Mateo, South San Francisco.

List of Area Codes in San Mateo County, California

The table below lists all telephone area codes used in San Mateo County, California, along with their associated cities and time zones from this dataset.

Related Area Code Pages

Explore related area code resources on Burning Compass:

• All area codes in California
• Individual area code details are available from the table above.