Spring Brook, Wisconsin
According to the United States Census Bureau, the town has a total area of 62.1 square miles (160.9 km²), of which, 60.8 square miles (157.4 km²) of it is land and 1.4 square miles (3.5 km²) of it (2.17%) is water.
As of the census of 2000, there were 1,320 people, 468 households, and 375 families residing in the town. The population density was 21.7 people per square mile (8.4/km²). There were 489 housing units at an average density of 8.0 per square mile (3.1/km²). The racial makeup of the town was 98.94% White, 0.15% Asian, 0.38% from other races, and 0.53% from two or more races. Hispanic or Latino of any race were 0.83% of the population.
There were 468 households out of which 40.8% had children under the age of 18 living with them, 72.0% were married couples living together, 3.8% had a female householder with no husband present, and 19.7% were non-families. 14.7% of all households were made up of individuals and 4.3% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.15.
In the town, the population was spread out with 28.7% under the age of 18, 6.5% from 18 to 24, 29.9% from 25 to 44, 25.0% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 110.2 males. For every 100 females age 18 and over, there were 106.4 males.
The median income for a household in the town was $46,600, and the median income for a family was $51,250. Males had a median income of $31,607 versus $22,788 for females. The per capita income for the town was $19,936. About 2.3% of families and 3.1% of the population were below the poverty line, including 0.8% of those under age 18 and 4.9% of those age 65 or over.