Each edition grades its towns against each other only.
Photo: Hshuvaeva · CC BY-SA 3.0More historic than 89% of U.S. towns · #193 of 1,035 in Pennsylvania. What drives it
Its Register listings are the Bahr Mill Complex and the Nicholas Johnson Mill. Below: maps from 1902 on and the census since 1980.
More historic than 89% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Colebrookdale Township is more historic than 89% of U.S. towns, #193 of 1,035 in Pennsylvania. All 2 inputs are above most U.S. towns; its National Register listings ranks highest and its share of homes from before 1940 lowest.
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 Colebrookdale Township’s 29.2 sits above most of its state (84% of Pennsylvania towns have fewer) while its 15 historic buildings outnumber those of 78% 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 Colebrookdale Township’s history is told.
Another post office, Gablesville, 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).
Every edition of the U.S. Geological Survey’s map of Colebrookdale 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 Colebrookdale Township.
From Wikipedia’s history of Colebrookdale Township.
The Bahr Mill Complex and Nicholas Johnson Mill were listed on the National Register of Historic Places in 1990.
Text from Wikipedia, licensed CC BY-SA 4.0.
Woven from the archive, old maps, post office records, the National Register and the people born here.
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The country’s official list of buildings and places worth saving.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Between 4,748 and 5,469 people in every census since 1980.
5 censuses, 1980–2020.
U.S. Census Bureau decennial counts, from the census table on Colebrookdale Township’s Wikipedia page.
Each neighbor’s History grade, on the same three inputs.
Colebrookdale Township is more historic than 89% of U.S. towns, #193 of 1,035 in Pennsylvania. 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.
Two places: the Bahr Mill Complex (listed 1990) and the Nicholas Johnson Mill (1990).
21% of Colebrookdale Township’s homes were built before 1940 (Census estimate, ±9.4 points), against a typical 18% for a Pennsylvania town; the median home was built in 1975.
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 the National Register of Historic Places (2), 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.
