Area code 906
Area code 906 is the telephone area code in the North American Numbering Plan for the entire Upper Peninsula of Michigan, including the following cities:
Isle Royale National Park and Mackinac Island also use the 906 area code.
Area code 906 is in the Eastern Time Zone, except for the counties bordering Wisconsin, which are in the Central Time Zone.History
906 was created as a split plan from 616 on March 19, 1961, as a flash-cut, with no permissive dialing period. 906 is among the least populous numbering plan areas in North America, serving only about 320,000 people. Therefore, the most recent NANPA projections does not list an exhaust date for 906, explaining that the projected exhaust date is more than 30 years in the future. The area code has inspired an unofficial holiday in the Upper Peninsula on September 6.
