What area code is 831?
Here's everything about it.
Instant lookup for the 831 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
831 at a glance
Summary
Cities & regions served by 831
Monterey / Salinas3 communities on record for 831.
Where 831 sits on the map
No overlayCoverage area
About the 831 region
831 covers Monterey / Salinas in California, including Monterey County. The code has been in service since 1998.
831 currently has no overlay, so its territory keeps a single, unshared code.
Split of 408.
Who called me from 831?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 831 does not prove the caller is really in the 831 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 831 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 831 number below.
Frequently asked questions
FAQWhat area code is 831?+–
831 is a telephone area code serving Monterey / Salinas in California, United States, in service since 1998.
Where is area code 831 located?+–
It covers Monterey County in California.
What cities are in area code 831?+–
Major communities on record include Monterey County. The code's territory spans the Monterey / Salinas region of California.
What time zone is 831?+–
831 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
When did area code 831 start?+–
831 entered service in 1998. Its history: split of 408.
Is 831 a scam area code?+–
Scam and robocall traffic can use any North American code, 831 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 831 number, and report anything suspicious.
Can I get a 831 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 831 number regardless of where you physically live.