Each edition grades its towns against each other only.
More historic than 27% of U.S. towns. What drives it
More historic than 27% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Shamrock Township is more historic than 27% 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 Shamrock 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: our sources. 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 Shamrock Township’s history is told.
From Wikipedia’s history of Shamrock Township.
Settled by Irish immigrants, Shamrock Township was named for the Shamrock, a national symbol of Ireland.
Text from Wikipedia, licensed CC BY-SA 4.0.
2026Voting booths on Primary Election Day, Aug. 11, 2026,…
2026Primary Election sign for Shamrock Township outside S…
2026An election booth surrounded by fire equipment on Pri…
2026A voter at Shamrock Town Hall
2026A voter at Shamrock Town Hall in
2026A "Vote" sign outside Shamrock Town Hall along Lake A…Nobody well known was born in Shamrock Township itself, so here are the best known from just nearby.
Another post office, Sheshebee, 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.
Shamrock Township is more historic than 27% 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.
10% of Shamrock Township’s homes were built before 1940 (Census estimate, ±2.8 points), against a typical 8.1% for a Minnesota town; the median home was built in 1978.
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 Wikimedia Commons (6), Wikipedia, 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.
