<P> Area code 760 is a California telephone area code that was split from area code 619 on March 22, 1997 . Area code 442 is an overlay of 760 that became effective on November 21, 2009 . It encompasses much of the southeastern and southernmost portions of California . The area includes Imperial, Inyo, and Mono counties, as well as portions of San Diego, Riverside, San Bernardino, Los Angeles and Kern counties . </P> <P> Area code 760 was split from 619 in 1997, which in turn had been split from area code 714 in 1982 . Within a decade of its creation, however, the proliferation of cell phones and pagers left 760 strained to the point that a new area code was needed for the area . The initial plan was a further area code split, with the San Diego and Imperial portions moving to a new 442 area code . However, this met with protests from businesses who did not want to change their numbers for the second time in a decade . At 46,666 square miles (120,860 km), it is the largest area code in California with approximately 29% of the state served by area codes 760 and 442 . </P>

Where is 442 area code located in california
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