What area code is 820?
Here's everything about it.
Instant lookup for the 820 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
820 at a glance
Summary
Cities & regions served by 820
Ventura (overlay)2 communities on record for 820.
Where 820 sits on the map
Overlay of 805Coverage area
About the 820 region
820 covers Ventura in California, including San Luis Obispo. The code has been in service since 2018.
820 itself is an overlay: it shares its territory with 805 and was introduced when those codes ran low on new number combinations. New lines may receive either code, calls between them are local, and 10-digit dialing is required across the region.
Overlaid on 805.
Who called me from 820?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 820 does not prove the caller is really in the 820 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 820 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 820 number below.
Frequently asked questions
FAQWhat area code is 820?+–
820 is a telephone area code serving Ventura in California, United States, in service since 2018.
Where is area code 820 located?+–
It covers San Luis Obispo in California.
What cities are in area code 820?+–
Major communities on record include San Luis Obispo. The code's territory spans the Ventura region of California.
What time zone is 820?+–
820 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
When did area code 820 start?+–
820 entered service in 2018. Its history: overlaid on 805.
Why does area code 820 exist?+–
820 is an overlay of 805: it covers the exact same territory and was introduced when the original code ran low on new number combinations. New lines may receive either code, calls between them are local, and 10-digit dialing applies.
Is 820 a scam area code?+–
Scam and robocall traffic can use any North American code, 820 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 820 number, and report anything suspicious.
Can I get a 820 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 820 number regardless of where you physically live, although in an overlaid region you may be assigned 805 instead.