|— Town —|
|Motto: Erin Go Bragh|
|• Total||36.3 sq mi (94.0 km2)|
|• Land||35.9 sq mi (92.9 km2)|
|• Water||0.4 sq mi (1.1 km2)|
|Elevation||1,010 ft (308 m)|
|• Density||102.2/sq mi (39.4/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||1583171|
Erin is a town in Washington County, Wisconsin, United States. The population was 3,664 at the 2000 census. The unincorporated community of Thompson is located in Erin. The unincorporated community of Hubertus is also located partially in the town.
According to the United States Census Bureau, the town has a total area of 36.3 square miles (94.0 km²), of which, 35.9 square miles (92.9 km²) of it is land and 0.4 square miles (1.1 km²) of it (1.18%) is water.
As of the census of 2000, there were 3,664 people, 1,287 households, and 1,093 families residing in the town. The population density was 102.2 people per square mile (39.5/km²). There were 1,352 housing units at an average density of 37.7 per square mile (14.6/km²). The racial makeup of the town was 98.50% White, 0.16% African American, 0.27% Native American, 0.44% Asian, 0.16% from other races, and 0.46% from two or more races. Hispanic or Latino of any race were 0.46% of the population.
There were 1,287 households out of which 37.3% had children under the age of 18 living with them, 78.6% were married couples living together, 4.1% had a female householder with no husband present, and 15.0% were non-families. 11.6% of all households were made up of individuals and 3.1% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.09.
In the town, the population was spread out with 26.8% under the age of 18, 5.0% from 18 to 24, 30.8% from 25 to 44, 28.5% from 45 to 64, and 9.0% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 104.7 males. For every 100 females age 18 and over, there were 104.5 males.
The median income for a household in the town was $74,875, and the median income for a family was $77,278. Males had a median income of $49,375 versus $33,889 for females. The per capita income for the town was $28,851. About 3.0% of families and 3.2% of the population were below the poverty line, including 2.6% of those under age 18 and 8.6% of those age 65 or over.
The Roman Catholic shrine of Holy Hill National Shrine of Mary, Help of Christians is located within the town.