Most of Bay Mills Township was built recently: 8% of its homes predate 1940 and the median home dates from 1991. Its Register listing is the Point Iroquois Light Station. Below: maps from 1951 on.
The Bay Mills Township post office opened in 1879, the earliest record of the town by name. Two smaller post offices, Bay Mills (1879) and Iroquois (1882), opened inside today’s town and later closed.
2020 census: 1,567147 years
How historic is Bay Mills Township?
B−
More historic than 46% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Bay Mills Township post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Bay Mills Township’s History grade
On its age, its old homes and the National Register, Bay Mills Township is more historic than 46% of U.S. towns. Its National Register listings hold the grade up; its age pulls it down.
B−
HistoryA character grade: shown, never part of Bay Mills 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 Bay Mills Township’s 5.4 sits above most of its state (76% of Michigan towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C to B−. The pre-1940 share is a Census survey estimate (±3.5 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 Bay Mills Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
In 2021, on Easter Sunday the Kateri Tekakwitha church in Bay Mills, Michigan burnt. A picture of the saint survived the fire. That May of the same year, another fire broke out at the same church and destroyed it.
Every edition of the U.S. Geological Survey’s map of Bay Mills Township. Tap a year, or press play to watch the town change.
1951Pendills Lake 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 Bay Mills Township.
On the National Register
1 historic place in Bay Mills Township
The country’s official list of buildings and places worth saving.
The Bay Mills Township post office opened in 1879, the earliest record of the town by name (U.S. post office records).
How does Bay Mills Township rank for history?
Bay Mills Township is more historic than 46% 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.
What is on the National Register in Bay Mills Township?
One place: the Point Iroquois Light Station (listed 1975).
How old are the homes in Bay Mills Township?
8% of Bay Mills Township’s homes were built before 1940 (Census estimate, ±3.5 points), against a typical 12% for a Michigan town; the median home was built in 1991.
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 (1), Wikidata (1), the National Register of Historic Places (1), 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.