The community of Nelsonville began about 1855 when English immigrant Jerome Nelson built a six-foot-high dam spanning the Tomorrow River, with a sawmill across the river from where the flouring mill now stands. After Nelson returned from the Civil War he added the flouring mill in 1868. A post office was added in 1871, named Nelsonville for the mill owner. By 1876 two other businesses were there: the Nelson & Loberg general store, and Peterson Boots and Shoes. Other business started in subsequent years, and the Norwegian Lutheran church in 1888.
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 (1), Wikidata (1), the National Register of Historic Places (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.