Each edition grades its towns against each other only.
More historic than 19% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, St. Clair Township is more historic than 19% of U.S. towns, #923 of 993 in Ohio. 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 St. Clair 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.
Four 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).
The first neighbors to add old photos shape how St. Clair Township’s history is told.
Wikipedia doesn’t have a history of St. Clair Township yet. The photos, dates and memories neighbors add here are how it gets written.
St. Clair Township is one of the eighteen townships of Columbiana County, Ohio, United States. As of the 2020 census the population was 7,804.
Its population held steady between the last two censuses: 7,957 in 2010, 7,804 in 2020.
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 Survey
2024Scenic flight along Ohio River 20241020 (1)
2016St. Clair Township, Columbiana County, Ohio Administr…
2016Little Beaver Creek looking upstream from Grimms Brid…
2016Grimms Bridge from west, slightly upstream
2016Destiny House Assembly of God, Calcutta, Ohio
2016Calcutta, Ohio water tower
2015Map of Columbiana County Ohio Highlighting Saint Clai…Map
2008OHMap-doton-Fredericktown-Columbiana
2004OHMap-doton-Glenmoor
2004OHMap-doton-CalcuttaEvery edition of the U.S. Geological Survey’s map of St. Clair 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 St. Clair Township.
Between 7,705 and 8,080 people in every census since 1980.
5 censuses, 1980–2020.
U.S. Census Bureau decennial counts, from the census table on St. Clair Township’s Wikipedia page.
Each neighbor’s History grade, on the same three inputs.
St. Clair Township is more historic than 19% of U.S. towns, #923 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.
6% of St. Clair Township’s homes were built before 1940 (Census estimate, ±3.0 points), against a typical 15% for an Ohio town; the median home was built in 1971.
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 (10), Wikidata and Wikipedia for famous people, 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.
