Area code 714 is a California telephone area code that was split from area code 213 as a flash-cut in 1951. Area code 657 is an overlay of 714 that became effective on September 23, 2008. It encompasses northern Orange County, a portion of Los Angeles County, and the Sleepy Hollow and Carbon Canyon areas of Chino Hills in San Bernardino County. Area code 714 originates at Westminster Blvd East Runs down to High Rise Ave. Today, five cities "straddle" the 657/714 and 949 area codes: Costa Mesa, Irvine, Santa Ana, Tustin, and Newport Beach.