|• Total||36.2 sq mi (93.7 km2)|
|• Land||36.2 sq mi (93.7 km2)|
|• Water||0.0 sq mi (0.0 km2)|
|Elevation||948 ft (289 m)|
|• Density||92.4/sq mi (35.7/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||1582657|
Addison is a town in Washington County, Wisconsin, United States. The population was 3,341 at the 2000 census. The unincorporated communities of Addison, Allenton, Aurora, Nenno, and Saint Anthony are located with the town. The unincorporated community of Saint Lawrence is also located partially in the town.
According to the United States Census Bureau, the town has a total area of 36.2 square miles (93.7 km²), all of it land.
As of the census of 2000, there were 3,341 people, 1,149 households, and 928 families residing in the town. The population density was 92.4 people per square mile (35.7/km²). There were 1,181 housing units at an average density of 32.6 per square mile (12.6/km²). The racial makeup of the town was 99.28% White, 0.15% African American, 0.21% Native American, 0.03% Asian, 0.03% Pacific Islander, 0.03% from other races, and 0.27% from two or more races. Hispanic or Latino of any race were 0.96% of the population.
There were 1,149 households out of which 41.2% had children under the age of 18 living with them, 71.6% were married couples living together, 5.7% had a female householder with no husband present, and 19.2% were non-families. 14.5% of all households were made up of individuals and 5.2% had someone living alone who was 65 years of age or older. The average household size was 2.90 and the average family size was 3.25.
In the town the population was spread out with 28.9% under the age of 18, 7.0% from 18 to 24, 33.3% from 25 to 44, 22.5% from 45 to 64, and 8.4% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 107.4 males. For every 100 females age 18 and over, there were 106.7 males.
The median income for a household in the town was $56,875, and the median income for a family was $64,034. Males had a median income of $38,641 versus $25,203 for females. The per capita income for the town was $20,999. About 3.0% of families and 4.5% of the population were below the poverty line, including 5.1% of those under age 18 and 8.9% of those age 65 or over.
Addison Public Schools are part of the School District of Slinger. Schools in the district include Addison Elementary, Allenton Elementary, Slinger Elementary, Slinger Middle School and Slinger High School.