Given the task definition and input, reply with output. Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Coordinates : 47 00 01 '' N 109 45 04 '' W / 47.00028 N 109.75111 W / 47.00028 ; - 109.75111 ( State of Montana ) Area code 406 is the telephone area code covering the entire state of Montana . It has been Montana 's area code since area codes were created in 1947 .
Area code 406