The St. Leon post office opened in 1852, the earliest record of the town by name. Another post office, Saint Leon (1852), opened inside today’s town and later closed.
2020 census: 660174 years
Founding year: the first St. Leon post office (Blevins & Helbock, CC0).The full story ↓
What stands out about St. Leon’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
A post office was established at St. Leon in 1852, and remained in operation until it was discontinued in 1955. The town was likely named for St. Leon Bembo.
Passages that mention St. Leon, cut from the printed page as they were published.
History of Dearborn County Indiana1915 · page 182Read the page →
Read the text
grocery, and then followed James Cannon, who kept a dry goods store. A postoffice was established here in 1840, and John B. Kessler was appointed postmaster. The population of the village in 1910 is given by the census as 200. St. Leon is located in the northern part of the township and as a village with a postoffice and several stores, and a population according to the census of 1910 of 250.
Text read by machine from the scan; it may contain errors.
History of Dearborn County Indiana1915 · page 921Read the page →
Read the text
The town of St. Leon, where Joseph A. Schuman first saw the light, and where he has become a prosperous citizen, is located in the northern part of Kelso township. Dearborn county. As early as 1841, this pleasant village boasted of enough business establishments to insure further progress, and it was in this year that the first house of worship was built. It was a log struc¬ ture, in which Rev. Father O'Rourke officiated. Mr. Schuman has always found the demand for his goods a sufficient guarantee of ultimate success, and has been satisfied to watch his early store grow into a flourishing
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
St. Leon, 1852 to 1955
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 (5), Wikipedia, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.