Each edition grades its towns against each other only.
More historic than 44% of U.S. towns. What drives it
Below: maps from 1961 on.
The Grass Lake Township post office opened in 1878, the earliest record of the town by name. Another post office, Grass Lake (1878), opened inside today’s town and later closed.
More historic than 44% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Grass Lake Township is more historic than 44% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Minnesota towns list about as much on the Register as the country (a typical Minnesota town has 2.1 per 10,000 residents, the U.S. 2.4), so Grass Lake Township’s 0.0 sits below most of its state (23% of Minnesota towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Grass Lake Township’s history is told.
Wikipedia doesn’t have a history of Grass Lake Township yet. The photos, dates and memories neighbors add here are how it gets written.
Grass Lake is an unincorporated community in Grass Lake Township, Kanabec County, Minnesota, United States.
Its first post office opened in 1878. Between the 2010 and 2020 censuses its population fell from 1,038 to 965 (-7%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Woven from the archive, old maps, post office records, the National Register and the people born here.
On the mapFirst mapped by the U.S. Geological SurveyWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Every edition of the U.S. Geological Survey’s map of Grass Lake Township. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Grass Lake Township.
Nobody well known was born in Grass Lake Township itself, so here are the best known from just nearby.
Another post office, Grass Lake, opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
The Grass Lake Township post office opened in 1878, the earliest record of the town by name (U.S. post office records).
Grass Lake Township is more historic than 44% 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.
25% of Grass Lake Township’s homes were built before 1940 (Census estimate, ±10.1 points), against a typical 8.1% for a Minnesota town; the median home was built in 1976.
What the archives can’t tell you, neighbors can.
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.
