Each edition grades its towns against each other only.
More historic than 54% of U.S. towns. What drives it
Below: maps from 1967 on and the census since 1980.
More historic than 54% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Porter Township is more historic than 54% 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 Porter 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: our sources. 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 Porter Township’s history is told.
Three other post offices opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Wikipedia doesn’t have a history of Porter Township yet. The photos, dates and memories neighbors add here are how it gets written.
Porter Township is a township that is located in Clinton County, Pennsylvania, United States. The population was 1,481 at the time of the 2020 census.
Its population held steady between the last two censuses: 1,460 in 2010, 1,487 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Porter 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 Porter Township.
Between 1,419 and 1,492 people in every census since 1980.
5 censuses, 1980–2020.
U.S. Census Bureau decennial counts, from the census table on Porter Township’s Wikipedia page.
Nobody well known was born in Porter Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
Porter Township is more historic than 54% 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.
26% of Porter Township’s homes were built before 1940 (Census estimate, ±7.4 points), against a typical 18% for a Pennsylvania town; the median home was built in 1970.
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 Wikimedia Commons (6), 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.
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