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is an unincorporated community in Marquette County in the U.S. state of Michigan. The community is in Forsyth Township at on M-35 near the forks of the east and middle branches of the Escanaba River. Gwinn is a census-designated place (CDP) for statistical purposes, and the CDP includes the nearby communities of
to the east. The population of the CDP was 1,965 at the 2000 census. The Gwinn ZIP code is 49841 and serves a much larger area, including most of Forsyth Township, as well as portions of Turin Township to the east, Wells and Ewing townships to the south, Tilden Township to the west, Richmond, Sands, West Branch, and Chocolay townships to the north.
The area was acquired by the Cleveland-Cliffs Iron Company (CCI) in 1901, who opened a mining operation there in 1905. In 1907, the president of CCI, William Gwinn Mather, commissioned the well-known Boston landscape designer, Warren H. Manning to design a residential community to support the mining operations. Mather named the community after his mother Elizabeth Lucy Gwinn. The community became known as a "Model Town", a trace of which remains in the name for the local high school sports teams: the "Modeltowners". It received a Post Office in 1908. The Austin Mine was also operated by Cleveland-Cliffs, which developed the community in 1911 to provide residences for miners and their families. Swanzy took its name from the Swanzy Iron Company, formed in 1883. Gwinn is also the home to the 1920s era blues players Fredric Croix and Quickslide Rick.
On June 24 2002, Gwinn was listed in the National Register of Historic Places as the "Gwinn Model Town Historic District, Forsyth Township, Marquette County, Michigan".
According to the United States Census Bureau, the CDP has a total area of 5.1 square miles (13.2 km²), all land.