Billings city phone area codes

406-206 406-208 406-215 406-237 406-238 406-245 406-247 406-248 406-252 406-254 406-255 406-256 406-259 406-272 406-281 406-294 406-325 406-371 406-373 406-384 406-435 406-534 406-545 406-591 406-598 406-620 406-633 406-651 406-652 406-655 406-656 406-657 406-661 406-670 406-671 406-672 406-679 406-690 406-694 406-696 406-697 406-698 406-749 406-788 406-794 406-839 406-850 406-855 406-860 406-861 406-867 406-869 406-894 406-896 417-258 417-289 417-369 417-463 417-583 417-695 417-732 417-743 417-744 417-748 580-391 580-422 580-725