Each edition grades its towns against each other only.
More historic than 61% of U.S. towns. What drives it
Below: 2 old photos and papers, maps from 1910 on, and the census since 1820.
Harrison Township dates its founding to 1817 (Wikidata). The census first counted it in 1820.
More historic than 61% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Harrison Township is more historic than 61% of U.S. towns. 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 Harrison 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: Wikidata (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 Harrison Township’s history is told.
Lost half of its people between 1840 and 1930, then grew 3-fold.
21 censuses, 1820–2020.
U.S. Census Bureau decennial counts, from the census table on Harrison Township’s Wikipedia page.
Two 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).
Wikipedia doesn’t have a history of Harrison Township yet. The photos, dates and memories neighbors add here are how it gets written.
Harrison Township is one of the fourteen townships of Carroll County, Ohio, United States. As of the 2020 census, the population was 2,397.
Harrison Township was established in 1817. Between the 2010 and 2020 censuses its population fell from 2,478 to 2,397 (-3%).
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.
In the archiveHarrison Township Carroll County Ohio 1894
On the mapFirst mapped by the U.S. Geological Survey
In the archiveHarrison Township, Carroll County, Ohio 19152 decades in the archive, from the 1890s to the 1910s. Scroll each row; tap a photo for its story.
Every edition of the U.S. Geological Survey’s map of Harrison 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 Harrison Township.
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Harrison Township’s page.
Retake this view · +15Nobody well known was born in Harrison Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
In 1817, according to Wikidata. Harrison Township’s post office opened in 1829, and the census of 1820 counted 518 people here.
Harrison Township is more historic than 61% 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.
20% of Harrison Township’s homes were built before 1940 (Census estimate, ±13.7 points), against a typical 15% for an Ohio town; the median home was built in 1979.
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), U.S. Geological Survey historical maps, U.S. Census counts (via 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.
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