# Area code 661 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Area_code_661 > Markdown URL: https://mediated.wiki/source/Area_code_661.md > Source: https://en.wikipedia.org/wiki/Area_code_661 > Source revision: 1340737770 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{short description|Area code in central and southern California, United States}} {{Use mdy dates|date=February 2026}} {{Use American English|date=February 2026}} {{California area codes image map|661}} '''Area code 661''' is a telephone [area code](/source/NPA_code) in the [North American Numbering Plan](/source/North_American_Numbering_Plan) (NANP) in the [U.S. state](/source/U.S._state) of [California](/source/California). The [numbering plan area](/source/numbering_plan_area) comprises the southern part of the [San Joaquin Valley](/source/San_Joaquin_Valley) and the far northern part of the [Los Angeles metropolitan area](/source/Los_Angeles_metropolitan_area). The largest cities in the area are [Bakersfield](/source/Bakersfield%2C_California), [Santa Clarita](/source/Santa_Clarita%2C_California), [Palmdale](/source/Palmdale%2C_California), and [Lancaster](/source/Lancaster%2C_California). The area code was created in an [area code split](/source/area_code_split) of [numbering plan area 805](/source/area_code_805) on February 13, 1999, in which the eastern part of 805 was renumbered with the new area code.{{cite web |url=https://www.nanpa.com/sites/default/files/planning_letters/PL-111.pdf |title=Planning Letter 111: NANP-Split of 805 (California) Numbering Plan Area (NPA) |publisher=[NANPA](/source/NANPA) |date=1998-02-12 |access-date=2025-07-23 }}{{Cite web |date=2017-05-26 |title=Before The Public Utilities Commission of the State of California |publisher=California Public Utilities Commission |url=https://www.cpuc.ca.gov/-/media/cpuc-website/files/uploadedfiles/cpuc_website/content/utilities_and_industries/communications/consumer_programs/area_codes/805/d-17-05-019.pdf |access-date=2025-07-23 }} ==Service area== The numbering plan area includes most of [Kern County](/source/Kern_County%2C_California), most of northern [Los Angeles County](/source/Los_Angeles_County%2C_California) (specifically the [Santa Clarita Valley](/source/Santa_Clarita_Valley), the [Antelope Valley](/source/Antelope_Valley) and the surrounding mountains), and small parts of [Ventura County](/source/Ventura_County%2C_California), [Santa Barbara County](/source/Santa_Barbara_County%2C_California), and [Tulare County](/source/Tulare_County%2C_California). Principal cities in the numbering plan area are [Bakersfield](/source/Bakersfield%2C_California), [Lancaster](/source/Lancaster%2C_California), [Palmdale](/source/Palmdale%2C_California), and [Santa Clarita](/source/Santa_Clarita%2C_California). ===Kern County=== {{div col|colwidth=9em}} *[Arvin](/source/Arvin%2C_California) *[Bakersfield](/source/Bakersfield%2C_California) *[Bear Valley Springs](/source/Bear_Valley_Springs%2C_California) *[Buttonwillow](/source/Buttonwillow%2C_California) *[Caliente](/source/Caliente%2C_California) *[Delano](/source/Delano%2C_California) *[Edwards Air Force Base](/source/Edwards_Air_Force_Base) *[Famoso](/source/Famoso%2C_California) *[Fellows](/source/Fellows%2C_California) *[Frazier Park](/source/Frazier_Park%2C_California) *[Golden Hills](/source/Golden_Hills%2C_California) *[Grapevine](/source/Grapevine%2C_California) *[Havilah](/source/Havilah%2C_California) *[Keene](/source/Keene%2C_California) *[Lake of the Woods](/source/Lake_of_the_Woods%2C_California) *[Lamont](/source/Lamont%2C_California) *[Lebec](/source/Lebec%2C_California) *[Lost Hills](/source/Lost_Hills%2C_California) *[Maricopa](/source/Maricopa%2C_California) *[McFarland](/source/McFarland%2C_California) *[McKittrick](/source/McKittrick%2C_California) *[Mettler](/source/Mettler%2C_California) *[Mojave](/source/Mojave%2C_California) *[North Edwards](/source/North_Edwards%2C_California) *[Oildale](/source/Oildale%2C_California) *[Pine Mountain Club](/source/Pine_Mountain_Club%2C_California) *[Rosamond](/source/Rosamond%2C_California) *[Rosedale](/source/Rosedale%2C_California) *[Shafter](/source/Shafter%2C_California) *[South Taft](/source/South_Taft%2C_California) *[Stallion Springs](/source/Stallion_Springs%2C_California) *[Taft](/source/Taft%2C_California) *[Taft Heights](/source/Taft_Heights%2C_California) *[Tehachapi](/source/Tehachapi%2C_California) *[Tupman](/source/Tupman%2C_California) *[Valley Acres](/source/Valley_Acres%2C_California) *[Walker Basin](/source/Walker_Basin%2C_California) *[Wasco](/source/Wasco%2C_California) *[Weedpatch](/source/Weedpatch%2C_California) *[Wheeler Ridge](/source/Wheeler_Ridge%2C_California) {{div col end}} ===Los Angeles County=== {{div col|colwidth=9em}} *[Acton](/source/Acton%2C_California) *[Agua Dulce](/source/Agua_Dulce%2C_California) *[Antelope Acres](/source/Antelope_Acres%2C_California) *[Castaic](/source/Castaic%2C_California) *[Del Sur](/source/Del_Sur%2C_California) *[Desert View Highlands](/source/Desert_View_Highlands%2C_California) *[Gorman](/source/Gorman%2C_California) *[Green Valley](/source/Green_Valley%2C_Los_Angeles_County%2C_California) *[Juniper Hills](/source/Juniper_Hills%2C_California) *[Lake Hughes](/source/Lake_Hughes%2C_California) *[Lake Los Angeles](/source/Lake_Los_Angeles%2C_California) *[Lancaster](/source/Lancaster%2C_California) *[Leona Valley](/source/Leona_Valley%2C_California) *[Littlerock](/source/Littlerock%2C_California) *[Llano](/source/Llano%2C_California) *[Neenach](/source/Neenach%2C_California) *[Palmdale](/source/Palmdale%2C_California) *[Pearblossom](/source/Pearblossom%2C_California) *[Quartz Hill](/source/Quartz_Hill%2C_California) *[Santa Clarita](/source/Santa_Clarita%2C_California) *[Stevenson Ranch](/source/Stevenson_Ranch%2C_California) *[Valencia](/source/Valencia%2C_California) *[Val Verde](/source/Val_Verde%2C_California) *[Valyermo](/source/Valyermo%2C_California) {{div col end}} ===Santa Barbara County=== {{div col|colwidth=9em}} *[Cuyama](/source/Cuyama%2C_California) *[New Cuyama](/source/New_Cuyama%2C_California) {{div col end}} ===Tulare County=== {{div col|colwidth=9em}} *[Allensworth](/source/Allensworth%2C_California) *[Earlimart](/source/Earlimart%2C_California) *[Posey](/source/Posey%2C_California) {{div col end}} ==See also== *[List of California area codes](/source/List_of_California_area_codes) *[List of North American Numbering Plan area codes](/source/List_of_North_American_Numbering_Plan_area_codes) ==References== {{reflist}} ==External links== {{Area code footer|Map=CA}} {{clear}} {{Area code box|State=CA |This=661 | N=[559](/source/area_code_559) | S=[805/820](/source/area_codes_805_and_820), [747/818](/source/area_codes_818_and_747), [626](/source/Area_code_626) | E=[442/760](/source/area_codes_760_and_442) | W=[805/820](/source/area_codes_805_and_820) }} {{coord|35|-118.7|region:US-CA_type:adm2nd|display=title}} 661 Category:Kern County, California Category:Area codes in Los Angeles County Category:Santa Barbara County, California Category:Tulare County, California Category:Mojave Desert Category:San Joaquin Valley Category:Bakersfield, California Category:Lancaster, California Category:Palmdale, California Category:Santa Clarita, California 661 --- Adapted from the Wikipedia article [Area code 661](https://en.wikipedia.org/wiki/Area_code_661) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Area_code_661?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.