Marion’s post office opened in 1846, and 1 of its places is on the National Register
Most of Marion was built recently: 6% of its homes predate 1940 and the median home dates from 1977. Its Register listing is the Hopkins House. Below: maps from 1956 on and the census since 1910.
Little is known about the early history of Marion, but it is believed that the first settlers of the area were the family of a man named David Stewart who came from Marion, Alabama in 1832. This has caused confusion as some sources state this is how the town got its name, while others argue it was named after the Lieutenant Colonel and later Brigadier General Francis Marion of the American Revolutionary War. Also known as the "swamp fox".
Marion was a part of Ouachita Parish until 1839 when it became a part of the new Union Parish.
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, Wikidata and Wikipedia for famous people, 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.