Each edition grades its towns against each other only.
More historic than 62% of U.S. towns · #509 of 993 in Ohio. What drives it
Below: maps from 1904 on.
The Sullivan Township post office opened in 1828, the earliest record of the town by name.
More historic than 62% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Sullivan Township is more historic than 62% of U.S. towns, #509 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 Sullivan 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: 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 Sullivan Township’s history is told.
Every edition of the U.S. Geological Survey’s map of Sullivan 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 Sullivan Township.
From Wikipedia’s history of Sullivan Township.
Sullivan was laid out in 1836. A post office called Sullivan has been in operation since 1828, which was closed in the summer of 2015.
Text from Wikipedia, licensed CC BY-SA 4.0.
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Old hamlets and crossroads still carry their names on the map.
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 Sullivan Township post office opened in 1828, the earliest record of the town by name (U.S. post office records).
Sullivan Township is more historic than 62% of U.S. towns, #509 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.
22% of Sullivan Township’s homes were built before 1940 (Census estimate, ±8.3 points), against a typical 15% for an Ohio town; the median home was built in 1995.
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.
