Founding year: Wikidata. First post office: 1843.The full story ↓
History grade
What drives Glen Rock’s History grade
On its age, its old homes and the National Register, Glen Rock is more historic than 98% of U.S. towns. All 3 inputs are above most U.S. towns; its National Register listings ranks highest and its age lowest.
A+
HistoryA character grade: shown, never part of Glen Rock’s overall grade.
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 Glen Rock’s 1,361 sits above most of its state (98% of Pennsylvania towns have fewer) while its 287 historic buildings outnumber those of 95% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from A to A+. The pre-1940 share (±2.2 points) is firm at this size. Two sources give 1838.
Founding year: Wikidata (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 →
What stands out about Glen Rock’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
In 1826, William Heathcote, the town's founder and a native of Cheshire, England, moved to Pennsylvania in 1826. In 1837, he purchased a farm, hoping to tap into the adjacent river's hydropower potential, and constructed a brick woolen mill on the ruins of an abandoned sawmill on his property, attracting mill workers and farmers to the area. Later that decade, the area received its own passenger train station, followed by a post office, church, iron foundry and machine shop in 1840s. In December 1843, Heathcote suggested that the town be named Glen Rock, taking inspiration from various lines from the poem Marmion.
Passages that mention Glen Rock, cut from the printed page as they were published.
History of York County, Pennsylvania1886 · page 181Read the page →
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Y. ; graduated in 1864; entered the office of Northern Central Railroad Company at Glen Rock as clerk and book keeper, remained four years; engaged in business at Glen Rock two years; sold out, and returned to his clerkship in the railroad office, and four months afterward was appointed agent of the company, and at this writing (1884), is also telegraph operator, express agent,
Text read by machine from the scan; it may contain errors.
History of York County Pennsylvania From the Earliest Time to the Present1886 · page 176Read the page →
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was the eldest, helped his father on the farm until twenty years of age, attending the county schools about six months. He then spent four years at milling in Glen Rock Valley. In 1843 he began business for himself at Glen Rock, engaged in merchandising, which he continued for nine years, and then engaged in farming for ten years. Returning to Glen Rock, he again engaged in the merchandise
Text read by machine from the scan; it may contain errors.
History of York County, Pennsylvania1886 · page 176Read the page →
Read the text
was the eldest, helped his father on the farm until twenty years of age, attending the county schools about six months. He then spent four years at milling in Glen Rock Valley. In 1842 he began business for himself at Glen Rock, engaged in merchandising, which he continued for nine j'ears, and then engaged in farming for ten years, Returning to Glen Rock, he again engaged in the merchandise
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Glen Rock, 1838 to 1958
Woven from the archive, old maps, post office records, the National Register and the people born here.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Questions about Glen Rock’s history
What year was Glen Rock founded?
In 1838, according to Wikidata. Glen Rock’s post office opened in 1843, and the census of 1860 counted 289 people here.
How does Glen Rock rank for history?
Glen Rock is more historic than 98% 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.
What is on the National Register in Glen Rock?
One place: the Glen Rock Historic District (listed 1997).
How old are the homes in Glen Rock?
39% of Glen Rock’s homes were built before 1940 (Census estimate, ±2.2 points), against a typical 18% for a Pennsylvania town; the median home was built in 1955.
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 (15), the National Register of Historic Places (1), 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), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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