Gwinn is an unincorporated community in Marquette County in the U.S. state of Michigan. The community is in Forsyth Township at 46°16′52″N 87°26′27″W / 46.28111°N 87.44083°W / 46.28111; -87.44083 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 Austin to the west and New Swanzy 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.
According to the United States Census Bureau, the CDP has a total area of 5.1 square miles (13 km), all land.
As of the census of 2000, there were 1,965 people, 851 households, and 584 families residing in the CDP. The population density was 386.5 per square mile (149.3/km²). There were 1,035 housing units at an average density of 203.6 per square mile (78.7/km²). The racial makeup of the CDP was 94.86% White, 0.92% African American, 1.48% Native American, 1.02% Asian, 0.36% from other races, and 1.37% from two or more races. Hispanic or Latino of any race were 0.92% of the population.
There were 851 households out of which 29.1% had children under the age of 18 living with them, 54.2% were married couples living together, 9.5% had a female householder with no husband present, and 31.3% were non-families. 28.4% of all households were made up of individuals and 11.0% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.80.
In the CDP, the population was spread out with 21.9% under the age of 18, 7.8% from 18 to 24, 25.6% from 25 to 44, 29.2% from 45 to 64, and 15.4% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 97.1 males. For every 100 females age 18 and over, there were 93.0 males.
The median income for a household in the CDP was $30,772, and the median income for a family was $41,250. Males had a median income of $35,962 versus $18,929 for females. The per capita income for the CDP was $16,511. About 12.0% of families and 17.3% of the population were below the poverty line, including 31.4% of those under age 18 and 8.5% of those age 65 or over.