Springbrook is a town in Washburn County, Wisconsin, United States. The population was 536 at the 2000 census. The unincorporated communities of Earl and Springbrook are located in the town.According to the United States Census Bureau, the town has a total area of 34.7 square miles, of which, 34.2 square miles of it is land and 0.5 square miles of it is water.As of the census of 2000, there were 536 people, 227 households, and 150 families residing in the town. The population density was 15.7 people per square mile. There were 300 housing units at an average density of 8.8 per square mile. The racial makeup of the town was 96.64% White, 0.19% African American, 1.49% Native American, 0.37% Asian, 0.19% from other races, and 1.12% from two or more races. Hispanic or Latino of any race were 1.68% of the population.There were 227 households out of which 25.6% had children under the age of 18 living with them, 55.9% were married couples living together, 6.