Glen Haven is a town in Grant County, Wisconsin, United States. According to the 2000 census, the town population was 490. The census-designated place of Glen Haven is located in the town.According to the United States Census Bureau, the town has a total area of 35.4 square miles, of which, 34.3 square miles of it is land and 1.1 square miles of it is water.As of the census of 2000, there were 490 people, 185 households, and 143 families residing in the town. The population density was 14.3 people per square mile. There were 198 housing units at an average density of 5.8 per square mile. The racial makeup of the town was 99.59% White and 0.41% Asian.There were 185 households out of which 31.4% had children under the age of 18 living with them, 67.0% were married couples living together, 5.9% had a female householder with no husband present, and 22.2% were non-families. 18.9% of all households were made up of individuals and 8.