New Holstein is a city in Calumet County, Wisconsin, United States.

In 1848, 70 people from Hamburg, Germany emigrated to the New Holstein area,[5] forming the basis of what would become the present city.

Many settlers were intellectuals who feared an impending war as a result of competing claims to the territory.

[7] As the amount of mail received in Altona increased, the United States Post Office wanted Altona to be renamed because the community's name was too close to Altoona in western Wisconsin.

[7] In the early years, settlers traveled for supplies to Calumetville, Wisconsin, a larger neighboring community.

In 1849 the town was organized, with the first chairman being Greening,[9] who was named county judge in 1855.

The first post office was built shortly after rail service started.

[9] That year it had two public halls, three hotels, a fire insurance company, and a cemetery.

[9] Near the railroad depot was a grain elevator owned by Herman Timm.

[11] The first city council was: Mayor Edward Funke, City Clerk Harvey C. Hansen, City Council President Peter Hass, Aldermen Gilbert Hipke, Robert Schilling, Louie Schaar, Edgar Lange, W. W. Lauson, Henry Schmitt, and Harry C. Hass, Superintendent of Water Works Henry Aggen, Fire Chief Walter Mathes, Assessor Arthur Roehl, and City Attorney George M.

[13] According to the United States Census Bureau, the city has a total area of 2.50 square miles (6.47 km2), all of it land.

31.2% of all households were made up of individuals, and 14.7% had someone living alone who was 65 years of age or older.

New Holstein Municipal Airport (8D1) serves the city and surrounding communities.