Area Code 650 - Wikipedia

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• 1 Service area Toggle Service area subsection
  • 1.1 San Mateo County
  • 1.2 Santa Clara County
  • 1.3 San Francisco County
• 2 References
• 3 External links

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Appearance move to sidebar hide Coordinates: 37°30′N 122°18′W / 37.5°N 122.3°W / 37.5; -122.3 From Wikipedia, the free encyclopedia Area code for San Mateo County and parts of Santa Clara County, California

Area code 650 is a telephone area code in the North American Numbering Plan (NANP) for the San Francisco Bay Area in the U.S. state of California. It was split from area code 415 on August 2, 1997, and includes most of San Mateo County (except the northernmost portion), part of San Francisco, and the northwestern portion of Santa Clara County including Palo Alto, Mountain View, and Los Altos.

Prior to October 2021, area code 650 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.[1]

Service area

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San Mateo County

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• Atherton
• Belmont
• Broadmoor
• Burlingame
• Colma
• Daly City (small portion in 415)
• East Palo Alto
• El Granada
• Emerald Lake Hills
• Foster City
• Half Moon Bay
• Highlands-Baywood Park
• Hillsborough
• Kings Mountain
• La Honda
• Ladera
• Loma Mar
• Los Trancos Woods
• Menlo Park
• Middleton Tract
• Millbrae
• Montara
• Moss Beach
• North Fair Oaks
• Pacifica
• Pescadero
• Portola Valley
• Princeton-by-the-Sea
• Redwood City
• San Bruno
• San Carlos
• San Gregorio
• San Mateo
• Sky Londa
• South San Francisco
• West Menlo Park
• Woodside

Santa Clara County

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• Los Altos
• Los Altos Hills
• Loyola
• Mountain View
• Palo Alto
• Stanford
• Sunnyvale (western edge)

San Francisco County

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• San Francisco

References

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1. ^ "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.

External links

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• "Area Code Maps". North American Numbering Plan Administrator.

• List of exchanges from AreaCodeDownload.com, 650 Area Code

California area codes: 209/350, 213/323, 310/424, 408/669, 415/628, 510/341, 530, 559, 562, 619/858, 626, 650, 661, 707/369, 714/657, 760/442, 805/820, 818/747, 831, 909/840, 916/279, 925, 949, 951

North: 415/628
West: Pacific Ocean, 808	650	East: 510/341, 925
South: 408/669, 831
Hawaii area codes: 808

37°30′N 122°18′W / 37.5°N 122.3°W / 37.5; -122.3

Retrieved from "https://en.wikipedia.org/w/index.php?title=Area_code_650&oldid=1286964184" Categories:

• Area codes in the United States
• Area codes in California
• Northern California
• 1997 introductions

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