Area Code Lookup
What Area Code Is Billings?
Area code 406 · Montana
Billings uses area code 406. It is located in Montana.
Area Code Serving Billings
Frequently Asked Questions
What area code is Billings?
Billings uses area code 406. It is located in Montana.
How do I call Billings from outside the US?
To call Billings 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.