Area code 661

Area code 661 is a telephone area code in the North American Numbering Plan for Southern California. The numbering plan area comprises the majority of Kern County, part of Ventura County, Los Angeles County, Santa Barbara County, and Tulare County. It was created in an area code split of area code 805 on February 13, 1999.

Numbering plan areas in California (blue) and border states. Area code 661 is shown in red.

Principal cities in the numbering plan area are Bakersfield, Palmdale, Santa Clarita, and Lancaster.