Corydon was settled in 1810 and incorporated in 1829. On March 26, 1846, a small sliver of the westernmost portion of Corydon bordering the Allegheny River was transferred to Warren County; the new township also retained the name Corydon, resulting in there being two adjacent but separate townships with the same name. The Warren County township of Corydon was flooded and dissolved in 1964.
Every edition of the U.S. Geological Survey’s map of Corydon Township. Tap a year, or press play to watch the town change.
1941Kinzua 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 Corydon Township.
People over time
Corydon Township, census by census
Between 275 and 301 people in every census since 2000.
3 censuses, 2000–2020.
U.S. Census Bureau decennial counts, from the census table on Corydon Township’s Wikipedia page.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
In 1810, according to Wikidata and Wikipedia’s history of the town. Corydon Township’s post office opened in 1832, and the census of 2000 counted 301 people here.
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 (4), Wikipedia, 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.