What area code is 858?
Here's everything about it.
Instant lookup for the 858 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
858 at a glance
Summary
Cities & regions served by 858
San Diego (north)Showing 12 of 55 recorded communities — major cities first.
Where 858 sits on the map
No overlayCoverage area
About the 858 region
858 covers San Diego (north) in California, including Alpine, Bonita, Bostonia, Boulevard and Campo. The code has been in service since 1999.
858 currently has no overlay, so its territory keeps a single, unshared code.
Split of 619; 2017: merged with 619 as an overlay.
Who called me from 858?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 858 does not prove the caller is really in the 858 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 858 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 858 number below.
Frequently asked questions
FAQWhat area code is 858?+–
858 is a telephone area code serving San Diego (north) in California, United States, in service since 1999.
Where is area code 858 located?+–
It covers San Diego County, including Alpine, Bonita, Bostonia, Boulevard and Campo in California.
What cities are in area code 858?+–
Major communities on record include Alpine, Bonita, Bostonia, Boulevard and Campo, among others. The code's territory spans the San Diego (north) region of California.
What time zone is 858?+–
858 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
When did area code 858 start?+–
858 entered service in 1999. Its history: split of 619; 2017: merged with 619 as an overlay.
Is 858 a scam area code?+–
Scam and robocall traffic can use any North American code, 858 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 858 number, and report anything suspicious.
Can I get a 858 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 858 number regardless of where you physically live.