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

As of the census[2] of 2000, there were 1,123 people, 444 households, and 314 families residing in the town.

There were 542 housing units at an average density of 7.9 per square mile (3.1/km2).

There were 444 households, out of which 28.6% had children under the age of 18 living with them, 60.6% were married couples living together, 7.0% had a female householder with no husband present, and 29.1% were non-families.

23.9% of all households were made up of individuals, and 11.9% had someone living alone who was 65 years of age or older.