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BHistory
History · Ramapo

Ramapo dates to 1791, and 22 of its places are on the National Register

More historic than 64% of U.S. towns · #573 of 758 in New York. What drives it

Most of Ramapo was built recently: 9% of its homes predate 1940 and the median home dates from 1974. Below: maps from 1910 on and the census since 1820.

1791founded
22on the National Register
9%homes built before 1940
3famous people
Quick answers

How Ramapo began

When was Ramapo founded?

1791

Ramapo dates its founding to 1791 (Wikidata). The census first counted it in 1820.

First census: 2,072 in 18202020 census: 148,919235 years

How historic is Ramapo?

B

More historic than 64% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: Wikidata. First post office: 1797.The full story ↓
History grade

What drives Ramapo’s History grade

On its age, its old homes and the National Register, Ramapo is more historic than 64% of U.S. towns, #573 of 758 in New York. Its age holds the grade up; its share of homes from before 1940 pulls it down.

B
HistoryA character grade: shown, never part of Ramapo’s overall grade.
All U.S. towns we grade (21,289)Ahead of 64%
NewerOlder
New York towns of 2,500+ (758)Ahead of 24%

Among the 400 U.S. cities of 100,000 or more, Ramapo ranks #198 on History.

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 Ramapo’s 2.6 sits below most of its state (27% of New York towns have fewer) while its 39 historic buildings outnumber those of 83% of U.S. towns.

NoteThe founding year comes from Wikidata alone; no second source gives 1791.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to B+. The pre-1940 share (±1.1 points) is firm at this size.

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 Ramapo’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

★ What stands out · On the National Register

22 historic places in Ramapo

The country’s official list of buildings and places worth saving.

places listed
22
National Historic Landmarks
0
none yet
historic buildings protected
39
each building in a district counts
first listed
1974
Sloat House
All 22 listings

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

Places that used to be

Lost post offices, old corners, places now gone and burying grounds

Ramapo had its own post office from 1825 to 1954. Eight other post offices opened and closed inside today’s town.

New Antrim
1797–1807
Ramapo Works
1807–1879
Ramapo
1825–1954
West Hempstead
1829–1848
Monsey
1846–today
Pierson's Depot
1847–1847
Sloatsburg
1848–today
Spring Valley
1848–today
Suffern
1850–today
Tallman
1860–today
17901910today
Hamlets and corners on the map
AirmontAntrimCamp HillChestnut RidgeHappy ValleyHillburnHillcrestKaserLadentownMonseyMontebelloNew HempsteadNew SquarePomonaPomona HeightsSloatsburgSpring ValleySterlingtonSuffernSuffern ParkSummit ParkTallmanViolaWesley Hills
Gone or out of use
First Church of Christ ScientistchurchNike Site NY-99CmilitaryNike Site NY-99LmilitaryNorth Main Street Public SchoolschoolRockland Drive-InlocaleSaint Joseph SchoolschoolSouth Main Street Public Schoolschool
2cemeteries and burying grounds inside Ramapo
AirmontMaple Grove

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Help out

Start Ramapo’s collection

The first neighbors to add old photos shape how Ramapo’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
The story

How Ramapo came to be

From Wikipedia’s history of Ramapo.

Read it all →

The present-day town was originally inhabited by the Munsee, a band of the Lenape nation. Their descendants now live on Stag Hill in Mahwah, New Jersey, where they form the New Jersey-recognized Ramapo Lenape Nation.

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about Ramapo in 1884

Passages that mention Ramapo, cut from the printed page as they were published.

The New Jersey and New York Railroad Company was organized April 3d 1880. As at present run this road enters the town of Ramapo at Spring Valley, and proceeding almost due north, leaves the town about a mile and a half north of Pomona station. Along its line in the town are Spring Valley, Union Sta…
History of Rockland County, New York1884Read the page →
Read the text

The New Jersey and New York Railroad Company was organized April 3d 1880. As at present run this road enters the town of Ramapo at Spring Valley, and proceeding almost due north, leaves the town about a mile and a half north of Pomona station. Along its line in the town are Spring Valley, Union Station, New Hempstead, Alexis Station, and Pomona.

Text read by machine from the scan; it may contain errors.
But a short distance above this factory there is another, belonging to a fine estate situated just on the eastern side of the village of Spring Valley, a portion of it being in the town of Ramapo. In the time of the war of 1812, this property was owned by Cornelius Blauvelt, and the water power was…
History of Rockland County, New York1884Read the page →
Read the text

But a short distance above this factory there is another, belonging to a fine estate situated just on the eastern side of the village of Spring Valley, a portion of it being in the town of Ramapo. In the time of the war of 1812, this property was owned by Cornelius Blauvelt, and the water power was utilized by him for running a saw and grist mill. At what time he sold it, is uncertain, but it was used by the purchaser, James Eckerson, for

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

Ramapo, 1781 to 1954

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 18th century
  2. 1781BuiltOld Sloatsburg Cemetery is built
  3. 1791
    FoundingRamapo is established
  4. 1795BuiltGurnee-Sherwood House is built
  5. 1797Post officeThe New Antrim post office opens
  6. 19th century
  7. 1807Post officeThe New Antrim post office closes
  8. 1807Post officeThe Ramapo Works post office opens
  9. 1825Post officeThe Ramapo post office opens
  10. 1827BuiltEnglish Church and Schoolhouse is built
  11. 1829Born hereJulia Pierson Emmet is born here
  12. 1869Born hereCharles Mulford Robinson is born here
  13. 1879Post officeThe Ramapo Works post office closes
  14. 1896Born hereHelen Morgan Hamilton is born here
  15. 20th century
  16. 1910On the mapFirst mapped by the U.S. Geological Survey
  17. 1936BuiltUS Post Office-Suffern is built
  18. 1954Post officeThe Ramapo post office closes
By decade

Ramapo, decade by decade

On the map

Ramapo on the map, 1910 to 1955

Every edition of the U.S. Geological Survey’s map of Ramapo. Tap a year, or press play to watch the town change.

Ramapo on the 1910 USGS mapRamapo on the 1931 USGS mapRamapo on the 1955 USGS map1910Ramapo 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 Ramapo.

People over time

Ramapo, census by census

020,00040,00060,00080,000100,000120,000140,000160,0001850190019502000148,919

Grew from 2,072 people in 1820 to 148,919 in 2020, more than tenfold.

21 censuses, 1820–2020.

U.S. Census Bureau decennial counts, from the census table on Ramapo’s Wikipedia page.

Famous people

3 famous people were born in Ramapo

Writers, athletes, leaders and more, ranked by how widely they’re known.

See all →
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about Ramapo’s history

What year was Ramapo founded?

In 1791, according to Wikidata. Ramapo’s post office opened in 1797, and the census of 1820 counted 2,072 people here.

How does Ramapo rank for history?

Ramapo is more historic than 64% of U.S. towns, #573 of 758 in New York. 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 Ramapo?

22 listings: 19 buildings, among them the Sloat House (listed 1974, the first), 1 site, 1 structure, and 1 object. 39 historic buildings in all.

How old are the homes in Ramapo?

9% of Ramapo’s homes were built before 1940 (Census estimate, ±1.1 points), against a typical 27% for a New York town; the median home was built in 1974.

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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 (17), Wikidata (1), the National Register of Historic Places (22), 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 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.