Area code lookup
What area code is 650?
Here's everything about it.
Instant lookup for the 650 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
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Caller ID · NPA-NXX-XXXXLive
Area code
650
Location
San Mateo / Peninsula, CA
Local time
--:--:-- --
San Mateo / Peninsula
650 at a glance
SummaryState
California
Time zone
Pacific (PT)
UTC offset
UTC−8 / −7 DST
Observes DST
Yes
Country
United States
Cities served by 650
San Mateo / PeninsulaSan Mateo / Peninsula
Where 650 sits on the map
No overlayCoverage area
About the 650 region
650 covers San Mateo / Peninsula in California. It currently has no overlay code, so seven-digit dialing may still be possible within the region.
Who called me from 650?
Community reportsNo community reports for 650 numbers yet. Be the first to report one.
Got a call from 650 that isn't listed?
Frequently asked questions
FAQWhat area code is 650?+–
650 is a telephone area code serving San Mateo / Peninsula in California, United States.
Where is area code 650 located?+–
It covers San Mateo / Peninsula in California.
What time zone is 650?+–
650 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
Can I get a 650 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 650 number regardless of where you physically live.