Wikipedia doesn’t have a history of Allegany Township yet. The photos, dates and memories neighbors add here are how it gets written.
Allegany Township is a township in Potter County, Pennsylvania, United States. The population was 397 at the 2020 census. Allegany Township is unusual in that it uses a variant spelling of the word Allegheny more commonly associated with the state of New York in its name. Most other entities in Pennsylvania use the "Allegheny" spelling.
Allegany Township was established in 1828. Between the 2010 and 2020 censuses its population fell from 422 to 397 (-6%).
Intro from Wikipedia. Population: U.S. Census Bureau.
By decade
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
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Every edition of the U.S. Geological Survey’s map of Allegany Township. Tap a year, or press play to watch the town change.
1932Genesee 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 Allegany Township.
People over time
Allegany Township, census by census
Between 397 and 422 people in every census since 2000.
3 censuses, 2000–2020.
U.S. Census Bureau decennial counts, from the census table on Allegany Township’s Wikipedia page.
Famous people
Famous people close to Allegany Township
Nobody well known was born in Allegany Township itself, so here are the best known from just nearby.
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 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.