2 of Henderson Township’s places are on the National Register
Its Register listings are the Huntingdon Armory and the Pennsylvania Canal Guard Lock and Feeder Dam, Raystown Branch. Most of Henderson Township was built recently: 9% of its homes predate 1940 and the median home dates from 1986. Below: maps from 1922 on and the census since 2000.
Every edition of the U.S. Geological Survey’s map of Henderson Township. Tap a year, or press play to watch the town change.
1922Mt Union 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 Henderson Township.
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), Wikidata (1), the National Register of Historic Places (2), Wikipedia, 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.