The Grass Township post office opened in 1878, the earliest record of the town by name. Three smaller post offices, Midway (1831), Oakland (1847) and Grass (1878), opened inside today’s town and later closed.
2020 census: 1,113148 years
How historic is Grass Township?
B−
More historic than 50% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Grass Township post office (Blevins & Helbock, CC0).
History grade
What drives Grass Township’s History grade
On its age, its old homes and the National Register, Grass Township is more historic than 50% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B−
HistoryA character grade: shown, never part of Grass Township’s overall grade.
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 Grass Township’s 0.0 sits below most of its state (22% of Indiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D to B+. The pre-1940 share is a Census survey estimate (±10.8 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (other dates in Quick answers). 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 →
What stands out about Grass Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The U.S. Geological Survey’s map of Grass Township.
1964Rockport sheet · 1:24,000
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Grass Township.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
The Grass Township post office opened in 1878, the earliest record of the town by name (U.S. post office records).
How does Grass Township rank for history?
Grass Township is more historic than 50% 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.
How old are the homes in Grass Township?
34% of Grass Township’s homes were built before 1940 (Census estimate, ±10.8 points), against a typical 14% for an Indiana town; the median home was built in 1959.
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 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.