Area Code Lookup
What Area Code Is Monterey?
2 area codes serve Monterey
Monterey is served by area codes 831, 931. It spans California and Tennessee.
Area Codes Serving Monterey
Frequently Asked Questions
What area code is Monterey?
Monterey is served by area codes 831, 931.
Why does Monterey have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Monterey now has 2 area codes — 831 and 931 — covering the same or overlapping areas.
How do I call Monterey from outside the US?
To call Monterey from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-831-XXX-XXXX). The +1 is the country code for all NANPA countries.