Most of Felsenthal was built recently: 2% of its homes predate 1940 and the median home dates from 1992. Below: maps from 1934 on and the census since 1920.
Wikipedia doesn’t have a history of Felsenthal yet. The photos, dates and memories neighbors add here are how it gets written.
Felsenthal is a town in Union County, Arkansas, United States. The population was 85 at the 2020 census, down from 150 at the 2010 census. It lays adjacent to the Ouachita River in the southeastern corner of Union County.
Its first post office opened in 1903. Between the 2010 and 2020 censuses its population fell from 150 to 85 (-43%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Felsenthal, 1903 to 1969
Woven from the archive, old maps, post office records, the National Register and the people born here.
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), 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.