Founding year: Wikipedia. First post office: 1833.
History grade
What drives Claibourne Township’s History grade
On its age, its old homes and the National Register, Claibourne Township is more historic than 74% of U.S. towns, #385 of 993 in Ohio. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B+
HistoryA character grade: shown, never part of Claibourne Township’s overall grade.
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 Claibourne 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.
NoteThe founding year comes from Wikipedia alone; no second source gives 1834.
How sure. Graded on any two of the three inputs instead, the letter would range from C+ to A. The pre-1940 share is a Census survey estimate (±8.3 points).
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 →
What stands out about Claibourne Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Claibourne Township. Tap a year, or press play to watch the town change.
1913Richwood sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Claibourne Township.
Timeline
Claibourne Township, 1834 to 1947
Woven from the archive, old maps, post office records, the National Register and the people born here.
Wikipedia doesn’t have a history of Claibourne Township yet. The photos, dates and memories neighbors add here are how it gets written.
Claibourne Township is one of the fourteen townships of Union County, Ohio, United States. The 2020 census found 3,481 people in the township, 2,222 of whom lived in the village of Richwood.
Claibourne Township was established in 1834. Its population held steady between the last two censuses: 3,519 in 2010, 3,481 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
In 1834, according to Wikipedia’s history of the town. Claibourne Township’s post office opened in 1833.
How does Claibourne Township rank for history?
Claibourne Township is more historic than 74% of U.S. towns, #385 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.
How old are the homes in Claibourne Township?
40% of Claibourne 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 1957.
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 (3), 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.