About California Area Code 858

The 858 area code includes California cities Del Mar, La Jolla, Poway, Rancho Bernardo, Rancho Santa Fe, Solana Beach; near northern suburbs of San Diego (including a small part of San Diego itself).

Nearby area codes are 619 and 760.
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Example: 858-555-5555

Extended information

North American area code 858 is located in San Diego County, California and covers the inner northern suburbs of San Diego, California and the northern half of the city proper, including the areas of Del Mar, Poway, La Jolla, Pacific Beach, Clairemont, and MCAS Miramar. This area code split from the 619 area code in 1999.

The outer northern suburbs of San Diego and the mountainous areas to the east (such as Ramona, Santa Ysabel, Warner Springs and Julian) are serviced by area code 760, which itself was a result of an earlier split of area code 619.

858 Area Code Exchanges 100-153:

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