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–Not graded
History · Sagaponack

Sagaponack’s post office opened in 1890, and 15% of its homes were built before 1940

1 place in town is on the National Register. Below: 1 old photo or paper and maps from 1903 on.

1890first post office
1on the National Register
15%homes built before 1940
1old photo or paper
Add an old photoShare a memory
From Sagaponack’s archive · credits on each photo
Quick answers

How Sagaponack began

When was Sagaponack founded?

1890

The Sagaponack post office opened in 1890, the earliest record of the town by name. Wikidata gives 2005.

2020 census: 770136 years
Founding year: the first Sagaponack post office (Blevins & Helbock, CC0). Wikidata: 2005.The full story ↓

What stands out about Sagaponack’s past

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

A history waiting to be writtenOnly 1 old photo is in the public archives. The rest are in attics and albums.On the map since 19033 editions of the USGS map, 1903 to 1956. Watch Sagaponack change.
★ What stands out · Help out

Start Sagaponack’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
1 of 10 decades. The empty ones are waiting for someone’s album.
Retake an old viewPart of Town of Southampton: stand where they stood+15Share a family photoSign in to add one+10
On the map

Sagaponack on the map, 1903 to 1956

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

Sagaponack on the 1903 USGS mapSagaponack on the 1946 USGS mapSagaponack on the 1956 USGS map1903Sag Harbor 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 Sagaponack.

The story

How Sagaponack came to be

From Wikipedia’s history of Sagaponack.

Read it all →

The area was first settled around 1653. The village was incorporated on September 2, 2005, in the wake of the failed attempt by Dunehampton, New York to incorporate. Dunehampton's incorporation would have blocked Sagaponack from beaches on the Atlantic Ocean. The villages are seeking to address various beach issues including erosion arising from groynes at Georgica Pond in East Hampton village.

Prior to its incorporation, Sagaponack was a census-designated place, with a population of 582 at the time of the 2000 census, and an area 70% greater than that of the current village.

Text from Wikipedia, licensed CC BY-SA 4.0.

By decade

Sagaponack, decade by decade

One decade in the archive so far: the 1910s. Scroll each row; tap a photo for its story.

1910s1 item
Part of Town of Southampton1915Part of Town of Southampton
1920s–1990snothing yet
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.
Add from your album
Today5 recent
Icicle2014IcicleFarm House in Winter on Parsonage Lane2011Farm House in Winter on Parsonage LaneSagaponack-town-hall2009Sagaponack-town-hallSagaponack-historic2008Sagaponack-historicIra Rennert house2006Ira Rennert house
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.

Part of Town of Southampton
Retake this viewPart of Town of Southampton, 1915

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

Retake this view · +15
On the National Register

1 listing protects 131 historic buildings

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

place listed
1
National Historic Landmarks
0
none yet
historic buildings protected
131
each building in a district counts

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

Stories next door

History across the town line

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

Bridgehampton4 historic placesnot graded: under 1,000 residents or part of its townSouthampton37 historic placesAEast Hampton33 historic placesAWainscott2 historic placesnot graded: under 1,000 residents or part of its town

Questions about Sagaponack’s history

What year was Sagaponack founded?

The Sagaponack post office opened in 1890, the earliest record of the town by name (U.S. post office records). Wikidata gives 2005.

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). How TownRatings grades history →

From Wikimedia Commons (6), Wikipedia and U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.