Area code 406
Area code 406 is a telephone area code in the North American Numbering Plan. It serves Montana, the United States.
- 406area code
- MTMontana
- UScountry
- 1-Jan-47in service
How to dial a 406 number
From within the United States and Canada, dial 1, then 406, then the seven-digit number. From another country, dial your international access code, then +1 406 and the seven-digit number.
Frequently asked questions
Where is area code 406?
Area code 406 serves Montana, the United States.
What is the country code for a 406 number?
Numbers with North American area codes use the country calling code +1.