Most of Dumont was built recently: 9% of its homes predate 1940 and the median home dates from 1968. Below: maps from 1950 on and the census since 1900.
A post office called Dumont has been in operation since 1886.
On June 22, 1919, at 6:30 pm there was a deadly tornado that killed one person, Nicholas Didlo, age 63. There was a total of $100,000 in property loss. The tornado came from the southeast side of the village leaving any warning for people to go into their cellars. Dumont was named by railroad officials.
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 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.