The Bridgewater Township post office opened in 1843, the earliest record of the town by name. Two smaller post offices, Columbia Lake (1833) and River Raisin (1864), opened inside today’s town and later closed.
2020 census: 1,615183 years
How historic is Bridgewater Township?
B+
More historic than 68% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Bridgewater Township post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Bridgewater Township’s History grade
On its age, its old homes and the National Register, Bridgewater Township is more historic than 68% 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 Bridgewater 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 Bridgewater 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 (±6.8 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 Bridgewater Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
On the map
Bridgewater Township on the map, 1906 to 1975
Every edition of the U.S. Geological Survey’s map of Bridgewater Township. Tap a year, or press play to watch the town change.
1906Saline 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 Bridgewater Township.
Bridgewater Township was organized in 1832. It was originally known as Hixon Township after one of it first settlers, Colonel Daniel Hixon. In 1833, it was renamed Bridgewater Township after Bridgewater, New York.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The Bridgewater Township post office opened in 1843, the earliest record of the town by name (U.S. post office records).
How does Bridgewater Township rank for history?
Bridgewater Township is more historic than 68% 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 Bridgewater Township?
25% of Bridgewater Township’s homes were built before 1940 (Census estimate, ±6.8 points), against a typical 12% for a Michigan town; the median home was built in 1977.
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 Wikimedia Commons (18), Wikipedia, 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.