Area Code: 909

909 Area Code belongs to the state of California. The following cities fall under this area code: Chino, Chino Hills, Claremont, Colton, Diamond Bar, Fontana, Highland, La Verne, Montclair, Ontario, Pomona, Rancho Cucamonga, Redlands, Rialto, San Bernardino, San Dimas, Upland, Yucaipa. There have been a total of 25381 Numbers for this area code.