The Cass Township post office opened in 1877, the earliest record of the town by name. Three smaller post offices, Cass (1877), Farnsworth (1886) and Caledonia (1902), opened inside today’s town and later closed.
2020 census: 1,856149 years
How historic is Cass Township?
C+
More historic than 43% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Cass Township post office (Blevins & Helbock, CC0).
History grade
What drives Cass Township’s History grade
On its age, its old homes and the National Register, Cass Township is more historic than 43% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C+
HistoryA character grade: shown, never part of Cass 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 Cass 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 (±6.4 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 Cass Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Cass Township yet. The photos, dates and memories neighbors add here are how it gets written.
Cass is an unincorporated town in Cass Township, Sullivan County, in the U.S. state of Indiana. It is part of the Terre Haute Metropolitan Statistical Area; the United States Census Bureau delineated Cass as a census designated place in the 2022 American Community Survey. A post office was established here in 1877, and remained in operation until it was discontinued in 1955.
Its first post office opened in 1877. Between the 2010 and 2020 censuses its population fell from 2,074 to 1,856 (-11%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Cass Township, 1877 to 1955
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Cass Township. Tap a year, or press play to watch the town change.
1943Dugger 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 Cass Township.
Famous people
Famous people close to Cass Township
Nobody well known was born in Cass Township itself, so here are the best known from just nearby.
The Cass Township post office opened in 1877, the earliest record of the town by name (U.S. post office records).
How does Cass Township rank for history?
Cass Township is more historic than 43% 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 Cass Township?
24% of Cass Township’s homes were built before 1940 (Census estimate, ±6.4 points), against a typical 14% for an Indiana town; the median home was built in 1978.
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.
