Athelstane is a town in Marinette County, Wisconsin, United States.

[4] As of the census[2] of 2000, there were 601 people, 270 households, and 179 families residing in the town.

There were 995 housing units at an average density of 9.4 per square mile (3.6/km2).

There were 270 households, out of which 15.6% had children under the age of 18 living with them, 54.4% were married couples living together, 8.5% had a female householder with no husband present, and 33.7% were non-families.

30.0% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older.