Area Code Lookup
What Area Code Is Great Falls?
Area code 406 · Montana
Great Falls uses area code 406. It is located in Montana.
Area Code Serving Great Falls
Frequently Asked Questions
What area code is Great Falls?
Great Falls uses area code 406. It is located in Montana.
How do I call Great Falls from outside the US?
To call Great Falls from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-406-XXX-XXXX). The +1 is the country code for all NANPA countries.