Browse / United States / Massachusetts / Dennis
Dennis
MassachusettsCDP
Dennis
Total population
2,424
Median home value
$944,500
Bachelor's+
Median income
$109,882
Founded
1639
Air quality index
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
- Rip Current Statement · ModerateRip Current Statement issued September 21 at 2:15PM EDT until September 22 at 8:00PM EDT by NWS Boston/Norton MA
Source: NOAA National Weather Service.
City facts
Facts from Wikidata (CC0).
Overview
Dennis is a town on Cape Cod in Massachusetts. It is a seaside resort town with colonial mansions along the northern Cape Cod Bay coastline and beaches along the southern Nantucket Sound. As of the 2020 census, its population was 14,674.
Read more on WikipediaHistory & geography
History
Indigenous peoples have been living in the Cape Cod region for at least 9,000 years. The historic Algonquian-speaking Wampanoag are one of 69 tribes of the original Wampanoag Nation. After being settled by English colonists of the New Plymouth Colony in 1639 as part of the town of Yarmouth, Dennis became known as the East Precinct. The Cape Playhouse in northern Dennis, established in 1927, is the oldest summer theater in the United States. Notable past and present Dennis residents include author Mary Higgins Clark, actress Bette Davis, and actress Amy Jo Johnson.
Geography
The town of Dennis spans the width of Cape Cod, with Cape Cod Bay to the north, Brewster to the northeast, Harwich to the southeast, Nantucket Sound to the south, and Yarmouth to the west. The town is about east of Barnstable, east of the Sagamore Bridge, and southeast of Boston. According to the United States Census Bureau, the town has a total area of , of which is land, and , or 7.88%, is water. Kelly's Pond was probably named after David and Elihu Kelly, who lived nearby in the early 1800s. The area between Kelly's Pond and the Bass River is known as Wrinkle Point. Wrinkle is another word for periwinkle. Uncle Barney's Road, which runs up Wrinkle Point parallel to the Bass River, was named after Barnabas Baker, who had a salt works in the area in the 1800s. The area between Weir Creek and Swan River was once known as Battletown and Lower County Road was called Battle town Road. It was said by a late 1800s resident of the road, Anthony Gage, that "Men used to raise sons to sender down her to fight." South Village was a fishing hamlet in West Dennis during its early days. The name is memorialized by South Village Road, Lane, Circle, Drive, and Beach. At one end of South Village Road is Trotting Park Road, which took its name from the popular race track that was off the street in the late 1800s. At the northern end of the road is a house named Jericho. It was built by Captain Theophilus Baker in 1801 and was purchased in the 20th century by Virginia Gildersleeve and Elizabeth Reynard. They gave the house its present name because its walls were about to come "tumbling down". Repairs were made and the house was given to the town in 1962.
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Dennis, MA from NOAA NWS API.
Air quality
Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Most-observed species
- Song SparrowMelospiza melodia (A.Wilson, 1810) · Aves41,015
- American CrowCorvus brachyrhynchos C.L.Brehm, 1822 · Aves36,880
- Black-capped ChickadeePoecile atricapillus (Linnaeus, 1766) · Aves35,418
- American herring gull, Smithsonian GullLarus smithsonianus Coues, 1862 · Aves35,196
- Blue JayCyanocitta cristata (Linnaeus, 1758) · Aves34,228
- Northern CardinalCardinalis cardinalis (Linnaeus, 1758) · Aves32,319
- American RobinTurdus migratorius Linnaeus, 1766 · Aves28,939
- American GoldfinchSpinus tristis (Linnaeus, 1758) · Aves28,132
Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).
Schools
Largest nearby schools
- Barnstable HighHigh · Hyannis · 1,763 students · 11.5:1 ratio
- Dennis-Yarmouth Regional HighHigh · South Yarmouth · 888 students · 11:1 ratio
- Sturgis Charter Public SchoolHigh · Hyannis · 830 students · 9.4:1 ratio
- Monomoy Regional High SchoolHigh · Harwich · 702 students · 11.7:1 ratio
- Cape Cod Region Vocational TechnicalHigh · Harwich · 666 students · 10.6:1 ratio
- Barnstable Intermediate SchoolMiddle · Hyannis · 651 students · 11.8:1 ratio
- Harwich Elementary SchoolElementary · Harwich · 477 students · 10.8:1 ratio
- Dennis-Yarmouth Middle SchoolMiddle · South Yarmouth · 476 students · 10.3:1 ratio
Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).
Earthquake history
Most recent
- M 3.6 — 2020-11-0810 km S of Bliss Corner, Massachusetts
- M 2.5 — 2005-11-174 km S of Plymouth, Massachusetts
- M 3 — 2002-03-1252 km E of Chatham, Massachusetts
Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).
Photos
Sights & places nearby
Notable people from here









People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Nearby places in Massachusetts
- Yarmouth Port2 mi away · pop. 5,961
- Harwich Center7.3 mi away · pop. 1,774
- Bourne21.6 mi away · pop. 1,806
- Duxbury32.9 mi away · pop. 1,994
- Ocean Grove52.2 mi away · pop. 3,453
- Peabody68.2 mi away · pop. 54,695
- Cochituate72.2 mi away
- Boxford76 mi away · pop. 2,284
- Amesbury Town86.6 mi away
- Chicopee125.8 mi away · pop. 55,295
- Deerfield135.5 mi away · pop. 458
- Cheshire162.4 mi away · pop. 674
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Dennis


Search results from Open Library.
Recent natural events nearby
Ground air-quality sensors
Recently spotted species
Nearest stream gauge
Live readings from USGS NWIS · measured 2026-10-13 23:45 UTC.
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • Open-Meteo Air Quality (CAMS)
- • USGS Earthquake Catalog (global feed)
- • USGS NWIS (water data)
- • NCES via Urban Institute Education Data Portal
- • GBIF (Global Biodiversity Information Facility)
- • CDC PLACES
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library