Millston is a town in Jackson County, Wisconsin, United States. The population was 136 at the 2000 census. The census-designated place of Millston is located in the town.
According to the United States Census Bureau, the town has a total area of 72.4 square miles (187.5 km²), of which, 70.9 square miles (183.7 km²) of it is land and 1.5 square miles (3.8 km²) of it (2.02%) is water.
As of the census of 2000, there were 136 people, 69 households, and 36 families residing in the town. The population density was 1.9 people per square mile (0.7/km²). There were 98 housing units at an average density of 1.4 per square mile (0.5/km²). The racial makeup of the town was 94.12% White and 5.88% Native American.