650 area code
The 650 area code covers most of San Mateo County and northwest Santa Clara County, California. Main cities include Palo Alto, San Mateo, Redwood City, Mountain View and Daly City.
- State
- California
- Main cities
- Palo Alto, San Mateo, Redwood City, Mountain View, Daly City
- Time zone
- Pacific Time
- Same area as
- No other codes
- In service since
- 1997
- Local calls
- 1 + 10 digits
Get a free 650 number for your business
Pick 650 when you set up your number and Scheduley gives your business a local Palo Alto number for calls and texts, answered 24/7 by an AI receptionist that books appointments and jobs. The number is free. AI calls are $2 a minute after your 10 welcome minutes.
Get a 650 number free- Pick your area code
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Where is the 650 area code?
Area code 650 covers most of San Mateo County and northwest Santa Clara County, California, including Palo Alto, San Mateo, Redwood City, Mountain View and Daly City. It went into service in 1997. It’s the only area code for this area right now. Local calls are dialed as 1 plus the 10-digit number.
Got a call from a 650 number?
A 650 number was first given out in the Palo Alto area. Area codes show where a number was assigned, not where the caller is today, and spam callers can fake any number. If you don’t know the caller, let it go to voicemail or look up the full number before you call back.
650 area code FAQ
Where is the 650 area code?
650 covers most of San Mateo County and northwest Santa Clara County, California, including Palo Alto, San Mateo, Redwood City, Mountain View and Daly City.
What time zone is area code 650?
Area code 650 is on Pacific Time.
What other area codes cover the same area as 650?
None right now. 650 is the only area code for this area.
Can I get a free 650 business phone number?
Yes. Pick 650 when you set up your Scheduley number and it gets a local number for you, if one is available. The number is free, and an AI receptionist can answer it 24/7 and book appointments.