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History · St. Leon

St. Leon’s post office opened in 1852, and 13% of its homes were built before 1940

Below: 3 old photos and papers from 1875 on and old-book passages.

1852first post office
0on the National Register
13%homes built before 1940
3old photos & papers
Photo: Chris Flook · CC BY-SA 4.0
Quick answers

How St. Leon began

When was St. Leon founded?

1852

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.

★ What stands out · Help out

Start St. Leon’s collection

The first neighbors to add old photos shape how St. Leon’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
The story

How St. Leon came to be

From Wikipedia’s history of St. Leon.

Read it all →

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.

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about St. Leon in 1915

Passages that mention St. Leon, cut from the printed page as they were published.

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 villag…
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.
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 w…
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.

  1. 19th century
  2. 1852Post officeThe Saint Leon post office opens
  3. 1875In the archiveAtlas of Dearborn County, Indiana - to which is added a map of the state of Indiana, also…
  4. 20th century
  5. 1955Post officeThe Saint Leon post office closes
By decade

St. Leon, decade by decade

One decade in the archive so far: the 1870s. Scroll each row; tap a photo for its story.

Places that used to be

Lost post offices, old corners and burying grounds

Another post office, Saint Leon, opened and closed inside today’s town.

Hamlets and corners on the map
Saint Leon
1cemetery inside St. Leon
Saint Joseph

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about St. Leon’s history

What year was St. Leon founded?

The St. Leon post office opened in 1852, the earliest record of the town by name (U.S. post office records).

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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.