The Castleton Township post office opened in 1842, the earliest record of the town by name. Six smaller post offices, Castleton (1842), Barryville (1857) and Meadville (1869), opened inside today’s town and later closed.
2020 census: 3,329184 years
How historic is Castleton Township?
A−
More historic than 76% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Castleton Township post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Castleton Township’s History grade
On its age, its old homes and the National Register, Castleton Township is more historic than 76% of U.S. towns, #155 of 701 in Michigan. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
A−
HistoryA character grade: shown, never part of Castleton Township’s overall grade.
Few Michigan towns list much on the Register (a typical Michigan town has 0.0 per 10,000 residents, the U.S. 2.4), so Castleton Township’s 0.0 sits below most of its state (32% of Michigan 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 B− to A. The pre-1940 share is a Census survey estimate (±5.9 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 Castleton Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost post offices, old corners, places now gone and burying grounds
Six other post offices opened and closed inside today’s town.
Castleton
1842–1857
Barryville
1857–1873
Nashville
1866–today
Meadville
1869–1878
Thornapple Lake
1875–1875
Morgan
1878–1933
Coats Grove
1879–1916
18401930today
Hamlets and corners on the map
Coats GroveMorganNashvilleThornapple Lake Estates Mobile Home Park
Gone or out of use
Barryville Post Officepost officeCoats Grove Post Officepost officeCoats Grove StationlocaleMorgan Post Officepost officeMorgan StationlocaleNashville Stationlocale
5cemeteries and burying grounds inside Castleton Township
BarryvilleCoats GroveHosmerNashvilleWarner
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Help out
Start Castleton Township’s collection
The first neighbors to add old photos shape how Castleton Township’s history is told.
Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
A grist mill was built along the banks of Highbank Creek in the township in 1856. There was later a post office named Barryville at this site from 1857 until 1873.
Coats Grove was located five miles northeast of Hastings on the Chicago, Kalamazoo and Saginaw Railway.
Every edition of the U.S. Geological Survey’s map of Castleton Township. Tap a year, or press play to watch the town change.
1950Nashville sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Castleton Township.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
The Castleton Township post office opened in 1842, the earliest record of the town by name (U.S. post office records).
How does Castleton Township rank for history?
Castleton Township is more historic than 76% of U.S. towns, #155 of 701 in Michigan. 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 Castleton Township?
39% of Castleton Township’s homes were built before 1940 (Census estimate, ±5.9 points), against a typical 12% for a Michigan 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 Wikipedia, Wikidata and Wikipedia for famous people, 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.