The southwestern part of the town was the locale of an ill-fated colony of refugees from the French Revolution. The settlements were disbanded by 1814. Modern settlement began circa 1830.
The town was formed in 1841 from the towns of Watson and Diana. In 1848, part of the town was used to help form New Bremen.
Theodore B. Basselin played a large part in Croghan's history. Mr. Basselin came to America and settled in Croghan, where he became the town's first millionaire due to his successful logging business. He was one of the town's top employers in his day.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
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 →
From Wikimedia Commons (4), Wikidata (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.