Each edition grades its towns against each other only.
More historic than 66% of U.S. towns. What drives it
Below: maps from 1908 on.
More historic than 66% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Flatrock Township is more historic than 66% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Ohio towns list about as much on the Register as the country (a typical Ohio town has 2.9 per 10,000 residents, the U.S. 2.4), so Flatrock Township’s 0.0 sits below most of its state (23% of Ohio 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 Flatrock Township’s history is told.
Every edition of the U.S. Geological Survey’s map of Flatrock 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 Flatrock Township.
Wikipedia doesn’t have a history of Flatrock Township yet. The photos, dates and memories neighbors add here are how it gets written.
Flatrock Township is one of the thirteen townships of Henry County, Ohio, United States. As of the 2020 census the population was 1,248.
Its population held steady between the last two censuses: 1,247 in 2010, 1,248 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Nobody well known was born in Flatrock Township itself, so here are the best known from just nearby.
Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
Flatrock Township is more historic than 66% 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.
43% of Flatrock Township’s homes were built before 1940 (Census estimate, ±12.4 points), against a typical 15% for an Ohio town; the median home was built in 1958.
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 (4), U.S. Geological Survey historical maps 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.
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