Bloomington is a town in Grant County, Wisconsin, United States. The population was 399 at the 2000 census. The Village of Bloomington is located within the town.
According to the United States Census Bureau, the town has a total area of 39.9 square miles (103.3 km²), of which, 36.4 square miles (94.2 km²) is land and 3.5 square miles (9.1 km²; 8.78%) is water.
As of the census of 2000, there were 399 people, 130 households, and 99 families residing in the town. The population density was 11.0 people per square mile (4.2/km²). There were 147 housing units at an average density of 4.0 per square mile (1.6/km²). The racial makeup of the town was 99.25% White, 0.50% from other races, and 0.25% from two or more races. 0.75% of the population were Hispanic or Latino of any race.
There were 130 households out of which 41.5% had children under the age of 18 living with them, 66.9% were married couples living together, 6.9% had a female householder with no husband present, and 23.1% were non-families. 18.5% of all households were made up of individuals and 8.5% had someone living alone who was 65 years of age or older. The average household size was 3.07 and the average family size was 3.61.
In the town, the population was spread out with 35.3% under the age of 18, 7.0% from 18 to 24, 27.8% from 25 to 44, 18.0% from 45 to 64, and 11.8% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 103.6 males. For every 100 females age 18 and over, there were 104.8 males.
The median income for a household in the town was $27,679, and the median income for a family was $34,286. Males had a median income of $20,938 versus $17,500 for females. The per capita income for the town was $11,622. About 18.1% of families and 20.5% of the population were below the poverty line, including 21.3% of those under age 18 and 39.4% of those age 65 or over.