Prince Frederick dates to 1722, and 1 of its places is on the National Register
More historic than 75% of U.S. towns · #44 of 261 in Maryland. What drives it
Most of Prince Frederick was built recently: 2% of its homes predate 1940 and the median home dates from 2006. Its Register listing is the Linden. Below: 2 old photos and papers and maps from 1892 on.
Founding year: Wikidata. First post office: 1824.The full story ↓
History grade
What drives Prince Frederick’s History grade
On its age, its old homes and the National Register, Prince Frederick is more historic than 75% of U.S. towns, #44 of 261 in Maryland. Its age holds the grade up; its share of homes from before 1940 pulls it down.
B+
HistoryA character grade: shown, never part of Prince Frederick’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 Prince Frederick’s 37.2 sits above most of its state (79% of Maryland towns have fewer) while its 11 historic buildings outnumber those of 76% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1722.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to A+. The pre-1940 share is a Census survey estimate (±3.4 points).
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 Prince Frederick’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Prince Frederick. Tap a year, or press play to watch the town change.
1892Prince Frederick sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Prince Frederick.
Places that used to be
Lost post offices, old corners and burying grounds
Prince Frederick’s post office has been open since 1911. Two other post offices opened and closed inside today’s town.
Prince Frederick has served as the county seat of Calvert County since 1722, when officials chose a plot of land known as "Williams' Old Field" as the spot for the new county courthouse. (Contemporary references to the piece of land include an upscale dining restaurant named Old Field Inn, and a street in Prince Frederick named "Old Field Lane.") The original courthouse was finally completed in 1732. The town was most likely named for George II's son Frederick, who was Prince of Wales during the time of the town's original conception.
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 1722, according to Wikidata. Prince Frederick’s post office opened in 1824.
How does Prince Frederick rank for history?
Prince Frederick is more historic than 75% of U.S. towns, #44 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.
What is on the National Register in Prince Frederick?
One place: the Linden (listed 2000).
How old are the homes in Prince Frederick?
2% of Prince Frederick’s homes were built before 1940 (Census estimate, ±3.4 points), against a typical 3.3% for a Maryland town; the median home was built in 2006.
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), the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, 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.