San Dimas, California

ZIP codes in San Dimas

Area codes for San Dimas

• 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

San Dimas is in the Pacific Time zone.

Towns near San Dimas

• Charter Oak3.6 km (2.2 mi)
• La Verne4.5 km (2.8 mi)
• Glendora5.3 km (3.3 mi)
• Covina6.1 km (3.8 mi)
• Citrus7 km (4.3 mi)
• Pomona7.3 km (4.5 mi)
• Azusa8.3 km (5.2 mi)
• Claremont9.1 km (5.7 mi)