St. Marys Township, in brief
Wikipedia doesn’t have a history of St. Marys Township yet. The photos, dates and memories neighbors add here are how it gets written.
Between the 2010 and 2020 censuses its population fell from 1,308 to 1,269 (-3%).
Each edition grades its towns against each other only.
More historic than 87% of U.S. towns. What drives it
Its Register listing is the Colter, Ben, Polygonal Barn. Below: maps from 1960 on.
More historic than 87% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, St. Marys Township is more historic than 87% of U.S. towns. All 2 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.
Indiana towns list more on the Register than most of the country (a typical Indiana town has 7.9 per 10,000 residents, the U.S. 2.4), so St. Marys Township’s 8.8 sits near the middle of its state (61% of Indiana towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how St. Marys Township’s history is told.
Wikipedia doesn’t have a history of St. Marys Township yet. The photos, dates and memories neighbors add here are how it gets written.
Between the 2010 and 2020 censuses its population fell from 1,308 to 1,269 (-3%).
Woven from the archive, old maps, post office records, the National Register and the people born here.
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Every edition of the U.S. Geological Survey’s map of St. Marys Township. Tap a year, or press play to watch the town change.

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of St. Marys Township.
The country’s official list of buildings and places worth saving.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Another post office, Bobo, opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
St. Marys Township is more historic than 87% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
One place: the Colter, Ben, Polygonal Barn (listed 1993).
38% of St. Marys Township’s homes were built before 1940 (Census estimate, ±23.5 points), against a typical 14% for an Indiana town; the median home was built in 1959.
What the archives can’t tell you, neighbors can.
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).
From the National Register of Historic Places (1), 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.
1960Wren sheet · 1:24,000