In 1858, five Polish immigrant families joined a German farming community at Ellis, two miles to the west of what would become Polonia. These families were probably the first Polish agricultural community in Wisconsin.
Some of the newly-arrived Poles at Ellis worshiped there with their German neighbors at St Martin's Catholic church for a few years, but after their numbers swelled to twenty or thirty families, they split in 1865 into a separate Polish-speaking Catholic church at Ellis. Three saloons stood nearby and worship was interrupted too often by noise and brawls at Ellis's saloons, so in 1871 the Polish Catholic church building was moved to a hill two miles to the east. Father Dabrowski called that hill Polonia.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
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