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AHistory
History · Mount Pleasant

29% of Mount Pleasant’s homes were built before 1940

More historic than 91% of U.S. towns · #246 of 758 in New York. What drives it

13 places in town are on the National Register, among them 3 National Historic Landmarks and four historic districts with 83 buildings between them. Below: 11 old photos and papers, maps from 1892 on, and the census since 1790.

13on the National Register
29%homes built before 1940
11old photos & papers
4famous people
From Mount Pleasant’s archive · credits on each photo
Quick answers

About Mount Pleasant’s history

How historic is Mount Pleasant?

A

More historic than 91% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Mount Pleasant’s History grade

On its age, its old homes and the National Register, Mount Pleasant is more historic than 91% of U.S. towns, #246 of 758 in New York. All 2 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.

A
HistoryA character grade: shown, never part of Mount Pleasant’s overall grade.
All U.S. towns we grade (21,289)Ahead of 91%
NewerOlder
New York towns of 2,500+ (758)Ahead of 68%

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 Mount Pleasant’s 21.2 sits near the middle of its state (57% of New York towns have fewer) while its 95 historic buildings outnumber those of 89% of U.S. towns.

How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±2.3 points) is firm at this size.

Founding year: our sources. 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 Mount Pleasant’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

13 listings protect 95 historic buildings

The country’s official list of buildings and places worth saving. 3 are National Historic Landmarks, the highest tier.

places listed
13
National Historic Landmarks
3
Dutch Reformed Church
historic buildings protected
95
each building in a district counts
first listed
1966
Dutch Reformed Church
All 13 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

Mount Pleasant had its own post office from 1797 to 1830. Nine other post offices opened and closed inside today’s town.

Mount Pleasant
1797–1830
Pleasantville
1828–today
Kensico
1849–1910
North Tarrytown
1850–1907
Neperan
1851–1901
Valhalla
1861–today
Pleasantville Station
1873–1913
Tarrytown Heights
1881–1890
Pocantico Hills
1890–1932
Hawthorne
1901–today
17901910today
Hamlets and corners on the map
ArchvilleBriggsvilleGrahamHawthornePhilipse ManorPleasantvillePocantico HillsSherman ParkSleepy HollowSleepy Hollow ManorThornwoodValhalla
Gone or out of use
Apple Hill FarmlocaleArchville SchoolschoolBear Ridge SchoolschoolBrace Memorial SchoolschoolCentral Methodist Episcopal ChurchchurchEastview SchoolschoolFirst Church of Christ ScientistchurchHarvey SchoolschoolMartha HomebuildingRockwood Hall Country ClublocaleSchool Number 11schoolSleepy Hollow SchoolschoolWartburg Orphanagebuilding
9cemeteries and burying grounds inside Mount Pleasant
All SoulsBanksGate of HeavenKensicoMount EdenMount PleasantOld MethodistPalmerSleepy Hollow

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

People over time

Mount Pleasant, census by census

05,00010,00015,00020,00025,00030,00035,00040,00045,000180018501900195020007,307 in 1840Low: 3,323

Lost half of its people between 1840 and 1850, then grew more than tenfold.

22 censuses, 1790–2020.

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

The story

How Mount Pleasant came to be

From Wikipedia’s history of Mount Pleasant.

Read it all →

The John D. Rockefeller Estate Kykuit in Pocantico Hills was added to the National Register of Historic Places in 1976 as a National Historic Landmark.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Mount Pleasant, 1797 to 1947

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

  1. 18th century
  2. 1797Post officeThe Mount Pleasant post office opens
  3. 19th century
  4. 1809In the archiveNear Mount Pleasant
  5. 1818Born hereJohn Lorimer Worden is born here
  6. 1820In the archiveNear Mount Pleasant looking up river to Haverstraw peak
  7. 1828Post officeThe Pleasantville post office opens
  8. 1830Post officeThe Mount Pleasant post office closes
  9. 1847Born hereJames William Beekman Jr. is born here
  10. 1849BuiltSleepy Hollow Cemetery is built
  11. 1849Post officeThe Kensico post office opens
  12. 1868In the archivePlate 48- Town of Mt. Pleasant, Westchester Co. N.Y
  13. 1872In the archivePlates 40 and 41- Town of Mount Pleasant, Westchester Co. N.Y
  14. 1883BuiltTarrytown Lighthouse is built
  15. 1892On the mapFirst mapped by the U.S. Geological Survey
  16. 20th century
  17. 1905In the archiveCatskill Mountains: scene near Mt. Pleasant, N.Y
  18. 1910BuiltPhilipse Manor Railroad Station is built
  19. 1910Post officeThe Kensico post office closes
  20. 1921BuiltUnion Church of Pocantico Hills is built
  21. 1947Born hereLarry James is born here
By decade

Mount Pleasant, decade by decade

6 decades in the archive, from the 1800s to the 1990s. Scroll each row; tap a photo for its story.

On the map

Mount Pleasant on the map, 1892 to 1979

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

Mount Pleasant on the 1892 USGS mapMount Pleasant on the 1902 USGS mapMount Pleasant on the 1932 USGS mapMount Pleasant on the 1947 USGS mapMount Pleasant on the 1957 USGS mapMount Pleasant on the 1967 USGS mapMount Pleasant on the 1979 USGS map1892Tarrytown 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 Mount Pleasant.

Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

Near Mount Pleasant
Retake this viewNear Mount Pleasant, 1809

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Mount Pleasant’s page.

Retake this view · +15
Famous people

4 famous people were born in Mount Pleasant

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

See all →
Help out

Finish Mount Pleasant’s story

Most archives stop around 1920. The photos from after that are in family albums, not libraries.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
2 of 10 decades. The empty ones are waiting for someone’s album.
Stories next door

History across the town line

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

Questions about Mount Pleasant’s history

How does Mount Pleasant rank for history?

Mount Pleasant is more historic than 91% of U.S. towns, #246 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 Mount Pleasant?

13 listings, 3 of them National Historic Landmarks: 8 buildings, among them the Dutch Reformed Church (a National Historic Landmark since 1961), 4 historic districts with 83 contributing buildings, and 1 structure. 95 historic buildings in all.

How old are the homes in Mount Pleasant?

29% of Mount Pleasant’s homes were built before 1940 (Census estimate, ±2.3 points), against a typical 27% for a New York town; the median home was built in 1957.

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 (9), the Library of Congress (8), Wikidata (1), the National Register of Historic Places (13), 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) 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.