St. Croix Falls is a town in Polk County, Wisconsin, United States.

As of the census[2] of 2000, there were 1,119 people, 420 households, and 309 families residing in the town.

There were 538 housing units at an average density of 17.4 per square mile (6.7/km2).

There were 420 households, out of which 36.0% had children under the age of 18 living with them, 63.6% were married couples living together, 5.7% had a female householder with no husband present, and 26.4% were non-families.

21.4% of all households were made up of individuals, and 6.7% had someone living alone who was 65 years of age or older.