Area Code 442 Location

Area code 442 serves Apple Valley, California, in the High Desert of San Bernardino County. It works as an overlay to area code 760, covering the same geographic region across the Victor Valley and beyond. The 442 overlay was introduced in 2009 to add more phone numbers as the 760 region grew, and 10-digit dialing is required for local calls. New Apple Valley phone numbers may use either 442 or 760, while existing numbers did not change.

Beyond Apple Valley, area code 442 spans a wide mix of communities and landmarks, including:

• Victor Valley cities: Victorville, Hesperia, Adelanto, and Barstow along historic Route 66
• Joshua Tree National Park gateways: Twentynine Palms and Joshua Tree
• Coachella Valley: Palm Springs, Palm Desert, and Indio
• North County San Diego: Oceanside, Carlsbad, Escondido, Vista, San Marcos, and Encinitas
• Eastern Sierra and desert towns: Bishop, Mammoth Lakes, and Ridgecrest
• Imperial Valley: El Centro and Calexico

In Apple Valley, 442 helps connect a growing High Desert community near the Mojave River and the I‑15 corridor. Both 442 and 760 share the same boundaries, so the area code on a phone number doesn’t change the physical location it serves. The region follows Pacific Time (PT) and observes daylight saving time. Apple Valley’s place in the Victor Valley makes it a gateway between Southern California’s inland deserts, Route 66 heritage, and mountain and coastal destinations also covered by 442/760.

“An overlay occurs when a new area code is assigned to the same geographic area as an existing area code.” — North American Numbering Plan Administrator (NANPA)