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What area code is 858? The area code 858 is in California and it serves San Diego, Chula Vista, El Cajon, National City, La Mesa, Santee, Poway, La Presa, Spring Valley, Imperial Beach, and some other surrounding cities. The area code 858 was created from area code 619 on June 30, 1998, and was first put to use on June 12, 1999.

 

The only county that is being served by the 858 area code is San Diego County.

The major cities under San Diego County that are being served by the 858 area code are listed below:

San Diego County

The cities within San Diego County that are served by this area code include 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, La Mesa, La Presa, Lakeside, Lemon Grove, National City, Pine Valley, Potrero, Poway, Rancho San Diego, Rancho Santa Fe, San Diego, Santee, Solana Beach, Spring Valley, and Winter Gardens.

 

858 Area Code Time Zone

What time zone is 858 Area Code? The time zone in the 858 area code is the Pacific time zone which is abbreviated as PST. That is America/Los Angeles time zone. The pacific standard time is UTC/GMT -8:00 hours while the pacific daylight saving time is +1:00 hour.

 

Significance of 858 Area Code

I don’t know if you notice that there is a three-digit number that precedes a telephone number any time you receive a call from your cell phone. Any time you see the three-digit code 858, it suggests that the call comes from any of the cities or counties listed above. However, there may be an exemption to this. With the use of mobile phone or roaming phone feature, the caller may not necessarily be at any of these cities or counties at the time of calling.

Nevertheless, knowing the counties and cities that the area code covers can guide you when to call a particular person. This is because the person you want to call may be in a time zone that is different from your own.

Telephone Carriers in 858 Area Code

If you want to get a wireless telephone within the area code, the popular wireless telephone carriers that you can approach include Sprint, Verizon Wireless, Cingular Wireless, T-mobile USA, American Messaging (am), American Messaging Services, and USA Mobility Wireless.

For landline, popular carriers are Pacific Bell, Pac – West Telecomm, Xo Comms, Mci Worldcom Comms-Ca, MPower Comms Corp, Teleport Comms America, U.S. Telepacific Corp, Level 3 Communications, Ymax Comms Corp, 01 Comms, Onvoy, Sbc Internet Services, North County Comms Corp, Tw Telecom, Peerless Network, Cox California Telcom, AT&T Local, Telcentris Comms, Global Crossing Local Services, , Mci Worldcom Comms, Paetec Comms, Telekenex, and Cricket Comm.

Zip Codes in 858 Area Code

City	County	State	Area Code	Zip Code
Del Mar	San Diego	California	858	92014
La Jolla	San Diego	California	858	92037
La Jolla	San Diego	California	858	92038
La Jolla	San Diego	California	858	92093
La Jolla	San Diego	California	858	92092
La Jolla	San Diego	California	858	92039
Poway	San Diego	California	858	92064
Poway	San Diego	California	858	92074
Rancho Santa Fe	San Diego	California	858	92067
Rancho Santa Fe	San Diego	California	858	92091
San Diego	San Diego	California	858	92109
San Diego	San Diego	California	858	92117
San Diego	San Diego	California	858	92121
San Diego	San Diego	California	858	92122
San Diego	San Diego	California	858	92123
San Diego	San Diego	California	858	92124
San Diego	San Diego	California	858	92126
San Diego	San Diego	California	858	92127
San Diego	San Diego	California	858	92128
San Diego	San Diego	California	858	92130
San Diego	San Diego	California	858	92131
San Diego	San Diego	California	858	92145
San Diego	San Diego	California	858	92129
San Diego	San Diego	California	858	92111
Solana Beach	San Diego	California	858	92075

Area Code

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