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US area code · California

Area code 650

Where the 650 area code is, its overlay and how to dial a +1 650 number from anywhere.

CoversBelmont, CaliforniaTime zonePacific (PT)TypeGeographic
Quick answer

The 650 area code is in Belmont, California, United States (Pacific (PT)). To call from abroad: +1 650 555-0123.

StateCalifornia
Main areaBelmont
Time zonePacific (PT)
TypeGeographic
10-digit dialingRequired
In service since22-Nov-1996

The 650 area code is a geographic North American Numbering Plan (NANP) code covering Belmont, California. It has been in service since 22-Nov-1996 and sits in the Pacific (PT) time zone.

How to dial a 650 number

From abroad+1 650 555-0123
Within the US / Canada1 650 555-0123
Locally (same area)650 555-0123

Cities in the 650 area code

A 650 number is usually in one of these places in California — 2 counties.

Belmont San MateoBurlingame San MateoDaly City San MateoEast Palo AltoFoster CityLos Altos Santa ClaraMenlo Park San MateoMillbrae San MateoMountain View Santa ClaraPacifica San MateoPalo Alto Santa ClaraRedwood City San MateoSan Bruno San MateoSan Carlos San MateoSan Mateo San MateoSouth San Francisco San Mateo

Other California area codes

209213279310323341350357369408415424442510530559

Frequently asked questions

Where is the 650 area code?

The 650 area code is in Belmont, California, United States (Pacific (PT)).

Do I have to dial 10 digits for 650?

Yes — dial the area code plus the seven-digit number.

How do I call a 650 number from another country?

Dial your exit code (or +), then 1, then 650, then the number: +1 650 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 650 number does not pinpoint a street or ZIP code.

Missed a call from +1 650?

In the 30 days to September 24, 2026, 468 unwanted calls showing a 650 number were reported to the US Federal Trade Commission, 54% of them recorded messages or robocalls. That puts 650 at #220 of 670 area codes reported.

Other170
Calls pretending to be government, businesses, or family and friends102
Reducing your debt (credit cards, mortgage, student loans)64
Dropped call or no message46
Before you call back
  • If you do not know anyone in California, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 650 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 650 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 650:

Pacific Bell 273New Cingular Wireless PCS, LLC 59T-Mobile USA, Inc. 57Onvoy, LLC 45Level 3 Communications, LLC 42Mcimetro Access Transmission Services LLC 42

About 20.8% of the 730 prefixes in use belong to mobile carriers: a 650 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 650 — cities & rate centres