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.
650 at a glance
Summary
Cities & regions served by 650
San Mateo / Peninsula7 communities on record for 650.
Where 650 sits on the map
No overlayCoverage area
About the 650 region
650 covers San Mateo / Peninsula in California, including Daly City, Palo Alto, Redwood City, Menlo Park and Mountain View. The code has been in service since 1997.
650 currently has no overlay, so its territory keeps a single, unshared code.
Split of 415.
Who called me from 650?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 650 does not prove the caller is really in the 650 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 650 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 650 number below.
Frequently asked questions
FAQWhat area code is 650?+–
650 is a telephone area code serving San Mateo / Peninsula in California, United States, in service since 1997.
Where is area code 650 located?+–
It covers Daly City, Palo Alto, Redwood City, Menlo Park and Mountain View in California.
What cities are in area code 650?+–
Major communities on record include Daly City, Palo Alto, Redwood City, Menlo Park and Mountain View, among others. The code's territory spans the San Mateo / Peninsula region of California.
What time zone is 650?+–
650 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
When did area code 650 start?+–
650 entered service in 1997. Its history: split of 415.
Is 650 a scam area code?+–
Scam and robocall traffic can use any North American code, 650 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 650 number, and report anything suspicious.
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.