D'Hanis’ post office opened in 1854, and 1 of its places is on the National Register
Most of D'Hanis was built recently: 10% of its homes predate 1940 and the median home dates from 1996. 1 place in town is on the National Register, among them a historic district with 20 buildings. Below: maps from 1956 on.
D'Hanis is named for Count von D'Hanis, who founded the town about 1845. D'Hanis was settled by 29 Alsatian families from present-day France and Germany. Many residents spoke Alsatian and German, however, some Alsatians were ethnic Germans who clung to the German culture, language, and traditions. D'Hanis was one of several towns that Henri Castro founded.
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 (4), Wikidata (1), the National Register of Historic Places (1), Wikipedia, U.S. Geological Survey historical maps, 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.