Each edition grades its towns against each other only.
More historic than 17% of U.S. towns · #1,013 of 1,035 in Pennsylvania. What drives it
Most of Carroll Township was built recently: 4% of its homes predate 1940 and the median home dates from 1993. Below: 1 old photo or paper, maps from 1904 on, and the census since 1850.
More historic than 17% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Carroll Township is more historic than 17% of U.S. towns, #1,013 of 1,035 in Pennsylvania. 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 Carroll 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 Carroll Township’s history is told.
Lost a third of its people between 1880 and 1920, then grew 9-fold.
18 censuses, 1850–2020.
U.S. Census Bureau decennial counts, from the census table on Carroll Township’s Wikipedia page.
Two 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 Carroll Township yet. The photos, dates and memories neighbors add here are how it gets written.
Carroll Township is a township in York County, Pennsylvania, United States. The population was 6,861 at the 2020 census.
Between the 2010 and 2020 censuses its population grew from 5,939 to 6,853 (+15%).
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.
In the archive1940 Census Enumeration District Maps - Pennsylvania - York County - Carroll - ED 67-1
On the mapFirst mapped by the U.S. Geological SurveyOne decade in the archive so far: the 1880s. Scroll each row; tap a photo for its story.
Every edition of the U.S. Geological Survey’s map of Carroll 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 Carroll Township.
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Carroll Township’s page.
Retake this view · +15Nobody well known was born in Carroll Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
Carroll Township is more historic than 17% of U.S. towns, #1,013 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.
4% of Carroll Township’s homes were built before 1940 (Census estimate, ±2.5 points), against a typical 18% for a Pennsylvania town; the median home was built in 1993.
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 (7), 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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