Each edition grades its towns against each other only.
More historic than 50% of U.S. towns · #655 of 993 in Ohio. What drives it
Below: maps from 1905 on.
Parkman Township dates its founding to 1804 (Wikipedia’s history). Its post office opened in 1806.
More historic than 50% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Parkman Township is more historic than 50% of U.S. towns, #655 of 993 in Ohio. Its age 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 Parkman 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: Wikipedia (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 Parkman Township’s history is told.
Three other post offices 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).
Every edition of the U.S. Geological Survey’s map of Parkman 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 Parkman Township.
From Wikipedia’s history of Parkman Township.
Parkman was laid out in 1804. The community has the name of Samuel Parkman, an official with the Connecticut Land Company. A post office called Parkman has been in operation since 1806.
Text from Wikipedia, licensed CC BY-SA 4.0.
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.
Each neighbor’s History grade, on the same three inputs.
In 1804, according to Wikipedia’s history of the town. Parkman Township’s post office opened in 1806.
Parkman Township is more historic than 50% of U.S. towns, #655 of 993 in Ohio. 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.
12% of Parkman Township’s homes were built before 1940 (Census estimate, ±6.7 points), against a typical 15% for an Ohio town; the median home was built in 1989.
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 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.
