Rancho Cucamonga, California

ZIP codes in Rancho Cucamonga

Area codes for Rancho Cucamonga

• Area code 909

  In service since November 14, 1992. Shares its area with 840. Local calls are dialed with 1 plus ten digits.

• Area code 840

  In service since February 23, 2021. Shares its area with 909. Local calls are dialed with 1 plus ten digits.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Rancho Cucamonga is in the Pacific Time zone.

Towns near Rancho Cucamonga

• Upland7.6 km (4.7 mi)
• Guasti7.7 km (4.8 mi)
• San Antonio Heights7.9 km (4.9 mi)
• Ontario10.3 km (6.4 mi)
• Fontana12.7 km (7.9 mi)
• Montclair13.1 km (8.1 mi)
• Claremont13.3 km (8.3 mi)
• Mount Baldy13.7 km (8.5 mi)