The area code 406 is located in Billings, Montana.
The telephone area code 406 is the primary area code for Billings, Montana. This three-digit code signifies that a phone number originates from the bustling city nicknamed the "Magic City" due to its rapid growth. Located in the heart of Big Sky Country, Billings serves as the largest city in Montana and is teeming with vibrant communities, stunning scenery, and undeniable charm. With its area code 406, Billings is ready to connect you to all the wonders of this magnificent state. Dial those digits and explore the endless possibilities that await you in Billings, Montana!