Introduction to Dennis, Massachusetts

Dennis, Massachusetts, in Barnstable county, is 28 miles SE of Plymouth, Massachusetts and 61 miles SE of Boston, Massachusetts. The town is in the Barnstable-Yarmouth area. There are 15,973 residents in Dennis.

Dennis History

Thomas Howes was the first settler in Dennis, arriving in 1639. The town was incorporated in 1793 and named Dennis in honor of Josiah Dennis, a residential minister. It developed a significant seafaring industry in its early days because of its lack of farmland.

Dennis and nearby Attractions

  • Water Wizz
  • Josiah Dennis Manse House
  • Tony Kent Arena
  • Cape Cod Rail Trail
  • Winslow Crocker House
  • Cape Museum of Fine Arts

Things To Do In Dennis

Dennis is popular as a seaside resort town. The warm waters of the Nantucket Sound and scenic views of the Cape Cod Bay coastline attract many visitors. Dennis has two beaches on freshwater lakes and sixteen on the seaside. Those interested in history would enjoy visiting the stately colonial mansions, the Cape Playhouse and the Cape Cinema.

Dennis Transportation

Barnstable Municipal is the nearest major airport.

Dennis Higher Education

Colleges located nearby Dennis include Cape Cop Community College and the University of Massachusetts.


Total Population 2,431
Male Share of the Population 47.8%
Female Share of the Population 52.2%
Senior Citizens 45%
Employed Population 16+ 914
Age of the Population 62


% of people married 66.5%
Average household size 2

Education and Earnings

Population % with Bachelor Degree or Higher 48.7%
Median Earnings25+ $50,417
Median Earnings Without High School Qualification $0
Median Earnings With High School Degree $24,712


Median Family Income $94,539
% Above Poverty Level 93.5%
% Below Poverty Level 6.5%

Commute & Sprawl

Average Commute Time 33 minutes
% Working from Home 5.7%
% Walking and Biking to Work 1.2%
% Using Public Transportation %


People Living Alone 34.6%
Median Gross Rent $968
Median House Value $472,400


Other(often includes Hispanic and African American) 7.2%
US/American 0.3%
English 22.2%
Irish 26%

Dennis Almanac

Category Value
Nearest Medium City 28 miles SE of Plymouth, Massachusetts (center to center)
Nearest Large City 61 miles SE of Boston, Massachusetts
County Barnstable
Metro Area Barnstable - Yarmouth
Standard Zip Codes 02638
Phone Area Codes 508
Time Zone Eastern (-5 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 41.735
Longitude -70.194

Dennis Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Distance 7.2 miles
Jan Temp 21 to 37 F
Apr Temp 38 to 52 F
Jul Temp 63 to 78 F
Oct Temp 44 to 61 F
Annual Precip 43 inches
Distance 12.7 miles
Jan Temp 24 to 38 F
Apr Temp 39 to 50 F
Jul Temp 62 to 75 F
Oct Temp 47 to 60 F
Annual Precip 46.7 inches
Distance 21.8 miles
Jan Temp 23 to 37 F
Apr Temp 37 to 52 F
Jul Temp 63 to 79 F
Oct Temp 45 to 60 F
Annual Precip 41.9 inches

Nearby Cities and Towns

Location Population Median Family Income
Brewster 2,306 $89,712
Chatham 1,470 $89,167
Harwich 12,205 $79,538
Orleans 1,531 $54,659
Yarmouth 23,680 $68,395

Dennis Public Libraries

Dennis Memorial Library Assoc.
Dennis, Massachusetts
(508) 385-2255

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More Information for Librarians

These schools offer particularly quick info upon request, and we have written detailed profiles for each (click school names to see the profiles). Request info from multiple schools, by clicking the Request Info links.
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