Area codes in Monterey, California
Monterey, California uses area code 831. The main Monterey area code is 831.
Area codes serving Monterey
All California area codes · Is a Monterey call a scam?
Nearby cities
- Salinas area codes
- Watsonville area codes
- Santa Cruz area codes
- Hollister area codes
- Gilroy area codes
- Los Gatos area codes
- Santa Clara area codes
- Sunnyvale area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.