North American area coe 951 is a California telephone area code which covers western Riverside County and was split off from the 909 area code in 2004. 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.