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History · East Dennis

East Dennis’ post office opened in 1828, and 1 of its places is on the National Register

Most of East Dennis was built recently: 7% of its homes predate 1940 and the median home dates from 1979. Below: 1 old photo or paper, maps from 1887 on, and old-book passages.

1828first post office
1on the National Register
7%homes built before 1940
1old photo or paper
Photo: liz west from Boxborough, MA, USA · CC BY 2.0
Quick answers

How East Dennis began

When was East Dennis founded?

1828

The East Dennis post office opened in 1828, the earliest record of the town by name.

2020 census: 2,585198 years
Founding year: the first East Dennis post office (Blevins & Helbock, CC0).

What stands out about East Dennis’ past

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

★ What stands out · Help out

Start East Dennis’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
1 of 10 decades. The empty ones are waiting for someone’s album.
On the map

East Dennis on the map, 1887 to 1974

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

East Dennis on the 1887 USGS mapEast Dennis on the 1893 USGS mapEast Dennis on the 1949 USGS mapEast Dennis on the 1961 USGS mapEast Dennis on the 1974 USGS map1887Yarmouth 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 East Dennis.

The story so far

East Dennis, in brief

Wikipedia doesn’t have a history of East Dennis yet. The photos, dates and memories neighbors add here are how it gets written.

East Dennis is a village and census-designated place (CDP) in the town of Dennis in Barnstable County, Massachusetts, United States. It was settled in the 1630s. As of the 2020 census, East Dennis had a population of 2,585.

Its first post office opened in 1828. Between the 2010 and 2020 censuses its population fell from 2,753 to 2,585 (-6%).

Intro from Wikipedia. Population: U.S. Census Bureau.

From the old history books

What they wrote about East Dennis in 1890

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

still traveling from division to division. In 1770 school houses had been erected at Nobscusset and Quivet Neck, and the town of Dennis, when erected, had as many districtsor divisions as the entire territory of both towns the century before. The original East Dennis school house was built in 1769 …
History of Barnstable County, Massachusetts, 1620-1637-1686-18901890 · page 521Read the page →
Read the text

still traveling from division to division. In 1770 school houses had been erected at Nobscusset and Quivet Neck, and the town of Dennis, when erected, had as many districtsor divisions as the entire territory of both towns the century before. The original East Dennis school house was built in 1769 near the present site of Worden Hall. It was warmed by the old fire place, and not until its successor was erected in 1826 was that wholesome luxury exchanged for the first school house stove.

Text read by machine from the scan; it may contain errors.
The Wesleyan Methodist Society, East Dennis, organized as the Reformed Methodist Society of Dennis and Brewster in 1814, and erected in 1821 a meeting-house over the line in Brewster, where the society worshipped until 1845, when the present name was adopted.
History of Barnstable County, Massachusetts, 1620-1637-1686-18901890 · page 519Read the page →
Read the text

The Wesleyan Methodist Society, East Dennis, organized as the Reformed Methodist Society of Dennis and Brewster in 1814, and erected in 1821 a meeting-house over the line in Brewster, where the society worshipped until 1845, when the present name was adopted.

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.

By decade

East Dennis, decade by decade

One decade in the archive so far: the 1960s. Scroll each row; tap a photo for its story.

1970s–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
On the National Register

1 historic place in East Dennis

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

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

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

Famous people

Famous people close to East Dennis

Nobody well known was born in East Dennis itself, so here are the best known from just nearby.

See all →
Stories next door

History across the town line

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

Questions about East Dennis’ history

What year was East Dennis founded?

The East Dennis post office opened in 1828, the earliest record of the town by name (U.S. post office records).

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), U.S. Geological Survey historical maps 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.