US Area Code
650
San Mateo County · California
Area code 650 serves Palo Alto, Redwood City, San Mateo and surrounding areas in California. Look up any 650 number below to check for spam, see caller ID, carrier, and line type.
Area Code Details
- State / Territory
- California
- Region
- San Mateo County
- Major Cities
- Palo Alto, Redwood City, San Mateo
- Timezone
- Pacific Time
- Country
- United States
- Format
- +1 (650) XXX-XXXX
Other California area codes
209 Central Valley213 Downtown Los Angeles310 West Los Angeles323 Los Angeles341 East Bay408 San Jose415 San Francisco424 Los Angeles442 Eastern San Diego County510 East Bay530 Northern California559 Central Valley562 Long Beach619 San Diego626 San Gabriel Valley628 San Francisco657 Orange County661 Kern County669 Santa Clara County707 North Bay / Wine Country714 Orange County747 San Fernando Valley760 Inland Empire / Desert805 Central Coast818 San Fernando Valley820 San Bernardino / Riverside831 Monterey Bay858 North San Diego909 Inland Empire916 Sacramento925 East Contra Costa949 South Orange County951 Inland Empire