Each edition grades its towns against each other only.
More historic than 41% of U.S. towns. What drives it
Below: maps from 1921 on.
The Castanea Township post office opened in 1886, the earliest record of the town by name.
More historic than 41% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Castanea Township is more historic than 41% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Pennsylvania towns list about as much on the Register as the country (a typical Pennsylvania town has 2.1 per 10,000 residents, the U.S. 2.4), so Castanea Township’s 0.0 sits below most of its state (25% of Pennsylvania towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: the first post office (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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Castanea Township’s history is told.
Every edition of the U.S. Geological Survey’s map of Castanea 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 Castanea Township.
Wikipedia doesn’t have a history of Castanea Township yet. The photos, dates and memories neighbors add here are how it gets written.
Castanea is a census-designated place (CDP) in Castanea Township, Pennsylvania, United States. The population was 1,125 at the 2010 census.
Its first post office opened in 1886. Between the 2010 and 2020 censuses its population fell from 1,185 to 1,107 (-7%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Old hamlets and crossroads still carry their names on the map.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
The Castanea Township post office opened in 1886, the earliest record of the town by name (U.S. post office records).
Castanea Township is more historic than 41% of U.S. towns. 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.
21% of Castanea Township’s homes were built before 1940 (Census estimate, ±6.8 points), against a typical 18% for a Pennsylvania town; the median home was built in 1967.
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 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.
