What is what area code is 906?

Area code 906 is located in the Upper Peninsula of Michigan, covering an area that includes cities such as Marquette, Escanaba, Sault Ste. Marie, and Houghton. The area code was created in 1961 as part of the North American Numbering Plan. Region serves the western half of the Upper Peninsula, with area code 906 serving as the main area code for telephone numbers in this region.