858 Area Code

The 858 area code is found in the state of California, and spans 8 different Counties. Listed below are the 8 Counties that reside inside of the 858 area code. Included under the Counties are the cities within the given County.
Alameda County California
San Leandro
Los Angeles County California
Los Angeles
Orange County California
Buena Park
San Diego County California
Cardiff By The Sea, Carlsbad, Chula Vista, Coronado, Del Mar, El Cajon, Encinitas, Escondido, Imperial Beach, La Jolla, La Mesa, National City, Oceanside, Poway, Rancho Santa Fe, San Diego, San Ysidro, Santee, Solana Beach, Valley Center
San Francisco County California
San Francisco
San Luis Obispo County California
San Luis Obispo
Santa Clara County California
Santa Clara
Solano County California