Geographic Regions and Area Codes

Area code 650 is located on the coast of California, covering parts of San Mateo and Santa Clara counties. This area code includes major cities such as San Mateo, Daly City, Redwood City, Mountain View, Palo Alto, Menlo Park, and San Bruno. Additionally, parts of San Francisco are also served by this area code. The region is adjacent to several other area codes, including 408/669 (San Jose, CA), 415/628 (San Francisco, CA), 510 (Oakland, CA), 831 (Salinas, CA), and 925 (Concord, CA).

Key cities in Area Code 650:

  • San Mateo
  • Daly City
  • Redwood City
  • Mountain View
  • Palo Alto
  • Menlo Park
  • San Bruno