Map of California area codes in blue (and border states) with 951 in red North American area code 951 is a California telephone area code which covers western Riverside County and was split off from the 909 area code in 2004. Until 1992, the area covered by 951 was part of area code 714. It covers Beaumont, Corona, Canyon Lake, Riverside, Temescal Canyon, Woodcrest, Arlington, Mira Loma, Moreno Valley, Perris, Sun City, Lake Elsinore, Murrieta, Temecula, Hemet, Lakeview, Nuevo, Norco, Banning, Eastvale, Quail Valley and Idyllwild. [edit] List of cities in the 951 area code [edit] See also [edit] External links | State of California Area Codes: 209, 213, 310, 323, 408, 415, 424, 510, 530, 559, 562, 619, 626, 650, 657, 661, 707, 714, 747, 760, 805, 818, 831, 858, 909, 916, 925, 949, 951 | | North: 909 | | | West: 657/714, 949 | area code 951 | East: 760 | | South: 760 | | |