Founding year: Wikidata; Wikipedia’s history section gives the same year.The full story ↓
History grade
What drives Roslyn Estates’ History grade
On its age, its old homes and the National Register, Roslyn Estates is more historic than 30% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C
HistoryA character grade: shown, never part of Roslyn Estates’ overall grade.
New York towns list more on the Register than most of the country (a typical New York town has 12.3 per 10,000 residents, the U.S. 2.4), so Roslyn Estates’ 0.0 sits below most of its state (10% of New York towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to B−. The pre-1940 share is a Census survey estimate (±10.2 points). Two sources give 1931.
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 Roslyn Estates’ 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 Roslyn Estates. Tap a year, or press play to watch the town change.
1897Oyster Bay 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 Roslyn Estates.
The area where Roslyn Estates is located was originally inhabited by the Matinecock Native Americans. European colonists started to settle in the area in the 17th century – specifically settlers of Dutch and English heritage. From that point until the early 20th century, much of what is now the Village of Roslyn Estates consisted of farmland and estates.
In 1931, according to Wikidata and Wikipedia’s history of the town. the census of 1940 counted 464 people here.
How does Roslyn Estates rank for history?
Roslyn Estates is more historic than 30% 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.
How old are the homes in Roslyn Estates?
31% of Roslyn Estates’ homes were built before 1940 (Census estimate, ±10.2 points), against a typical 27% for a New York town; the median home was built in 1954.
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 and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.