Wikipedia doesn’t have a history of Stephan yet. The photos, dates and memories neighbors add here are how it gets written.
Stephan is an unincorporated community and census-designated place (CDP) in Hyde County, South Dakota, United States. Stephan has been assigned the ZIP code of 57346. The population of the CDP was 68 at the 2020 census. Some say Stephan was named in honor of the martyred Saint Stephan, while others believe the community has the name of Monsignor J. A. Stephan, a local missionary. The tribal K-12 school Crow Creek Tribal School, affiliated with the Bureau of Indian Education (BIE), is in the settlement.
Its first post office opened in 1886.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Stephan, 1886 to 1957
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 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.