Each edition grades its towns against each other only.
Its Register listing is the Helmick Covered Bridge. Below: maps from 1913 on and the census since 1990.
The Clark Township post office opened in 1831, the earliest record of the town by name. Three smaller post offices, Clark (1831), Helmick (1862) and Layland (1888), opened inside today’s town and later closed.
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 Clark 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).
Wikipedia doesn’t have a history of Clark Township yet. The photos, dates and memories neighbors add here are how it gets written.
Clark Township is one of the twenty-two townships of Coshocton County, Ohio, United States. As of the 2020 census, its population was 670.
Its first post office opened in 1831. Between the 2010 and 2020 censuses its population grew from 586 to 670 (+14%).
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.
On the mapFirst mapped by the U.S. Geological SurveyEvery edition of the U.S. Geological Survey’s map of Clark 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 Clark Township.
The country’s official list of buildings and places worth saving.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Between 578 and 670 people in every census since 1990.
4 censuses, 1990–2020.
U.S. Census Bureau decennial counts, from the census table on Clark Township’s Wikipedia page.
Nobody well known was born in Clark Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
The Clark Township post office opened in 1831, the earliest record of the town by name (U.S. post office records).
One place: the Helmick Covered Bridge (listed 1975).
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). How TownRatings grades history →
From Wikimedia Commons (2), Wikidata (1), the National Register of Historic Places (1), 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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