Most of Guion was built recently: 0.0% of its homes predate 1940 and the median home dates from 1976. Below: maps from 1890 on and the census since 1910.
The Guion post office opened in 1903, the earliest record of the town by name. Another post office, Louis (1895), opened inside today’s town and later closed.
First census: 296 in 19102020 census: 68123 years
Founding year: the first Guion post office (Blevins & Helbock, CC0).
What stands out about Guion’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
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 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.