New Holstein is a town in Calumet County in the U.S. state of Wisconsin. The population was 1,457 at the 2000 census. The City of New Holstein is located within the town, but the two are politically independent. The unincorporated community of St. Anna, Wisconsin is located at the south edge of the town. St. Anna is also located partially in the town of Russell.
There were 539 households out of which 34.1% had children under the age of 18 living with them, 72.7% were married couples living together, 5.0% had a female householder with no husband present, and 18.6% were non-families. 15.0% 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 2.70 and the average family size was 3.00.
In the town the population was spread out with 25.1% under the age of 18, 7.6% from 18 to 24, 27.5% from 25 to 44, 28.1% from 45 to 64, and 11.7% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 101.0 males. For every 100 females age 18 and over, there were 104.3 males.
The median income for a household in the town was $58,050, and the median income for a family was $61,250. Males had a median income of $37,689 versus $25,938 for females. The per capita income for the town was $21,371. About 4.3% of families and 6.4% of the population were below the poverty line, including 9.2% of those under age 18 and 3.8% of those age 65 or over.