More historic than 31% of U.S. towns · #140 of 261 in Maryland. What drives it
Most of Glenmont was built recently: 2% of its homes predate 1940 and the median home dates from 1976. Below: 1 old photo or paper and maps from 1908 on.
Founding year: Wikipedia. First post office: 1898.The full story ↓
History grade
What drives Glenmont’s History grade
On its age, its old homes and the National Register, Glenmont is more historic than 31% of U.S. towns, #140 of 261 in Maryland. Its age holds the grade up; its share of homes from before 1940 pulls it down.
C
HistoryA character grade: shown, never part of Glenmont’s overall grade.
Few Maryland towns list much on the Register (a typical Maryland town has 0.9 per 10,000 residents, the U.S. 2.4), so Glenmont’s 0.0 sits below most of its state (20% of Maryland towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
NoteThe founding year comes from Wikipedia alone; no second source gives 1816.
How sure. Graded on any two of the three inputs instead, the letter would range from D to C+. The pre-1940 share (±0.9 points) is firm at this size.
Founding year: Wikipedia (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 Glenmont’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
A brick Colonial manor house, named the Hermitage, was built by John Bowie Jr., in 1750. Bowie's father, John Bowie Sr., was a Scottish immigrant who arrived in America around 1705. John Bowie Jr. purchased the land for 25 cents per acre, and on it he built the Hermitage for his sixteen-year-old son, Allen Bowie Jr. The property itself was located around where Georgian Forest Park is today. Two years later, John died, and Allen moved to the property. In June 1774, Allen was part of a now-famous meeting at Hungerford's Tavern in today's Rockville where those in attendance fiercely criticized Great Britain and decided they should stop trading with it. During the American Revolution, Allen Bowie commanded a company of troops, which he funded himself.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
In 1816, according to Wikipedia’s history of the town. Glenmont’s post office opened in 1898.
How does Glenmont rank for history?
Glenmont is more historic than 31% of U.S. towns, #140 of 261 in Maryland. 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.
How old are the homes in Glenmont?
2% of Glenmont’s homes were built before 1940 (Census estimate), against a typical 3.3% for a Maryland town; the median home was built in 1976.
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 (12), Wikipedia, 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.
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