09/06/2020
Telephone area codes were established in 1947, when Michigan was assigned three: 313, 517, and 616. By 1961, an increase in the population using telephones prompted the creation of another area code: 906. Taken from the former 616 area, the area code is used for all of Michigan's Upper Peninsula, including Isle Royale and Mackinac Island. As the boundaries of the peninsula and the area code align, the area is sometimes referred to as "The 906."
Many residents of the Upper Peninsula, often called Yoopers, recognize September 6 (9/06) as a day to celebrate their unique homeland. Happy (906) Day!