Area Code 858

What is an Area Code? An area code is a section of a telephone number that denotes the broad area that the phone receiving the call is based in. Area codes were first introduced circa 1947 for operator use only. Area codes are three-digit numbers that represent Numbering Plan Areas (NPAs). The area code for a particular city or region is the series of numbers that you have to dial before someone’s number if you are making a phone call to that place from a different area. Area code 858 serves the state of California.

The table below shows the towns and cities that use area code 858

Alpine
Bonita
Bostonia
Boulevard
Campo
Casa de Oro-Mount Helix
Chula Vista
Coronado
Crest
Del Mar
Descanso
El Cajon
Eucalyptus Hills
Fairbanks Ranch
Granite Hills
Harbison Canyon

Imperial Beach
Jacumba
Jamul
Lakeside
La Mesa
La Presa
Lemon Grove
National City

Pine Valley
Potrero
Poway
Rancho San Diego
San Diego
Santee
Solana Beach
Spring Valley
Winter Gardens