Locations for Area Code - 661

Area code 661 serves parts of Southern California, including the Antelope Valley, Bakersfield, and northern Los Angeles County. It was created in 1999 from a split of area code 805 to serve a mix of agricultural and suburban areas. The region includes aerospace industries, desert cities, and growing commuter towns. Ten-digit dialing is required. 661 reflects the diversity and rapid development of inland Southern California.