Editing Area code 650

{{short description|Area code for San Mateo County and parts of Santa Clara County, California}}
{{California area codes image map|650}}
'''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, California|San Mateo County]] (except the  northernmost portion), part of [[San Francisco]], and the northwestern portion of [[Santa Clara County, California|Santa Clara County]] including [[Palo Alto, California|Palo Alto]], [[Mountain View, California|Mountain View]], and [[Los Altos, California|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.<ref name="pl556">{{cite web|url=https://nationalnanpa.com/pdf/PL_556.pdf|date=January 8, 2021|publisher=North American Numbering Plan Administrator |title=Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)|access-date=March 9, 2021}}</ref>

==Service area==
===San Mateo County===
{{div col|colwidth=20em}}
*[[Atherton, California|Atherton]]
*[[Belmont, California|Belmont]]
*[[Broadmoor, California|Broadmoor]]
*[[Burlingame, California|Burlingame]]
*[[Colma, California|Colma]]
*[[Daly City, California|Daly City]] (small portion in [[Area code 415|415]])
*[[East Palo Alto, California|East Palo Alto]]
*[[El Granada, California|El Granada]]
*[[Emerald Lake Hills, California|Emerald Lake Hills]]
*[[Foster City, California|Foster City]]
*[[Half Moon Bay, California|Half Moon Bay]]
*[[Highlands-Baywood Park, California|Highlands-Baywood Park]]
*[[Hillsborough, California|Hillsborough]]
*[[Kings Mountain, California|Kings Mountain]]
*[[La Honda, California|La Honda]]
*[[Ladera, California|Ladera]]
*[[Loma Mar, California|Loma Mar]]
*[[Los Trancos Woods, California|Los Trancos Woods]]
*[[Menlo Park, California|Menlo Park]]
*[[Middleton Tract, California|Middleton Tract]]
*[[Millbrae, California|Millbrae]]
*[[Montara, California|Montara]]
*[[Moss Beach, California|Moss Beach]]
*[[North Fair Oaks, California|North Fair Oaks]]
*[[Pacifica, California|Pacifica]]
*[[Pescadero, California|Pescadero]]
*[[Portola Valley, California|Portola Valley]]
*[[Princeton-by-the-Sea, California|Princeton-by-the-Sea]]
*[[Redwood City, California|Redwood City]]
*[[San Bruno, California|San Bruno]]
*[[San Carlos, California|San Carlos]]
*[[San Gregorio, California|San Gregorio]]
*[[San Mateo, California|San Mateo]]
*[[Sky Londa, California|Sky Londa]]
*[[South San Francisco, California|South San Francisco]]
*[[West Menlo Park, California|West Menlo Park]]
*[[Woodside, California|Woodside]]
{{div col end}}

===Santa Clara County===
{{div col|colwidth=20em}}
*[[Los Altos, California|Los Altos]]
*[[Los Altos Hills, California|Los Altos Hills]]
*[[Loyola, California|Loyola]]
*[[Mountain View, California|Mountain View]]
*[[Palo Alto, California|Palo Alto]]
*[[Stanford, California|Stanford]]
*[[Sunnyvale, California|Sunnyvale]] (western edge)
{{div col end}}

===San Francisco County===
*[[San Francisco, California|San Francisco]]

==References==
{{Reflist}}

==External links==
{{Area code footer|Map=CA}}
* [https://web.archive.org/web/20090303160200/http://areacodedownload.com/650/index.html List of exchanges from AreaCodeDownload.com, 650 Area Code]

{{Area code box | State = CA | This = 650
| N = [[area codes 415 and 628|415/628]]
| S = [[area codes 408 and 669|408/669]], [[area code 831|831]]
| E = [[area codes 510 and 341|510/341]], [[area code 925|925]]
| W = Pacific Ocean, [[area code 808|808]]
| S1 = HI}}

{{coord|37.5|-122.3|region:US-CA_type:adm2nd|display=title}}

[[Category:Area codes in the United States|650]]
[[Category:Area codes in California|650]]
[[Category:Northern California]]
[[Category:1997 introductions]]