The area code 906 is located in Sault Ste Marie, Michigan.
Area code 906 serves all of Michigan’s Upper Peninsula (UP), including the border city of Sault Ste. Marie on the St. Marys River. This region sits between Lakes Superior, Michigan, and Huron, with Sault Ste. Marie linked to Canada by the International Bridge and to the Lower Peninsula via the Mackinac Bridge’s UP end at St. Ignace. Known for big water, forests, and long winters, the 906 area code ties together small towns, college communities, and key shipping hubs like the Soo Locks.
Major 906 cities and landmarks include:
History and dialing facts: Area code 906 was established in 1961 to serve the Upper Peninsula and remains the UP’s only area code, so most local phone numbers here share 906. The territory spans two time zones—mostly Eastern Time, with a few western counties on Central Time—which can matter for call timing. It covers all 15 UP counties, from Gogebic and Menominee in the west and south to Chippewa and Mackinac in the east. Because the UP has a smaller population, 906 has not needed an overlay.
Established: 1961 — Source: North American Numbering Plan Administration (NANPA)
Fun regional notes: The Soo Locks in Sault Ste. Marie are among the world’s busiest lock systems, moving freighters between Lake Superior and the lower Great Lakes. The 906 area code also reaches some of Michigan’s most scenic places, from sandstone cliffs at Pictured Rocks to remote wilderness on Isle Royale. If you see a 906 number, chances are it’s from Michigan’s rugged, lake-lined north—and often from communities with deep maritime and mining roots.