Town of Dennis, Barnstable County, Massachusetts
The Town of Dennis is a town in Barnstable County, Massachusetts. About 14,868 people live there (2020–2024 estimate). It covers 20.6 sq mi (53.3 km²) of land and uses Eastern Time. It has its own local government.
- Population, 2020–2024 estimate
- 14,868 ± 24
- County
- Barnstable County
- School district
- Dennis-Yarmouth School District
- Land area
- 20.6 sq mi (53.3 km²)
- Type
- TownIts own local government
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $88,154 ± $9,976
- Median home value
- $627,100 ± $28,306
- Water area
- 1.76 sq mi (4.56 km²)
- State
- Massachusetts
- Census code (GEOID)
- 2500116775
- Coordinates (central point)
- 41.706123, -70.164823
These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Cities, towns and communities in the Town of Dennis, largest first
- Dennis Port (CDP)3,691 people
- South Dennis (CDP)3,135 people
- East Dennis (CDP)3,062 people
- West Dennis (CDP)2,556 people
- Dennis (CDP)2,424 people
These places’ central points lie inside the Town of Dennis. A place can reach across the line, and its government, if it has one, can be separate from the town’s.
Bordering areas, nearest first
- Town of Yarmouth3.8 mi southwest
- Town of Harwich4.9 mi east
- Town of Brewster5.8 mi northeast
These towns, townships, cities and boroughs share a boundary with the Town of Dennis. Distances are straight lines between central points, not driving distances.
Other towns in Barnstable County, largest first
- Town of Falmouth33,039 people
- Town of Yarmouth25,224 people
- Town of Sandwich20,522 people
- Town of Bourne20,323 people
- Town of Mashpee15,384 people
- Town of Harwich13,598 people
- Town of Brewster10,420 people
- Town of Chatham6,681 people
- Town of Orleans6,415 people
- Town of Eastham5,811 people
- Town of Wellfleet4,404 people
- Town of Provincetown3,703 people
All 13
- Town of Truro1,708 people
People counts are American Community Survey 2020–2024 5-year estimates. See Barnstable County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in the Town of Dennis
- Longest day
- 15 hours 12 minutes around June 21
- Shortest day
- 9 hours 9 minutes around December 21
- Earliest sunrise
- 5:05 AM around June 15
- Latest sunrise
- 7:18 AM the day before clocks go back in November
- Earliest sunset
- 4:10 PM around December 8
- Latest sunset
- 8:19 PM around June 27
Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:05 AM | 4:35 PM | 9 h 30 min |
| Feb 15 | 6:36 AM | 5:13 PM | 10 h 37 min |
| Mar 15 | 6:52 AM | 6:47 PM | 11 h 55 min |
| Apr 15 | 6:00 AM | 7:21 PM | 13 h 21 min |
| May 15 | 5:21 AM | 7:53 PM | 14 h 32 min |
| Jun 15 | 5:05 AM | 8:16 PM | 15 h 11 min |
| Jul 15 | 5:19 AM | 8:13 PM | 14 h 54 min |
| Aug 15 | 5:48 AM | 7:40 PM | 13 h 52 min |
| Sep 15 | 6:20 AM | 6:50 PM | 12 h 30 min |
| Oct 15 | 6:52 AM | 5:59 PM | 11 h 7 min |
| Nov 15 | 6:29 AM | 4:20 PM | 9 h 51 min |
| Dec 15 | 7:00 AM | 4:10 PM | 9 h 10 min |
Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.
Before using this answer on a form
A town line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Barnstable County or the local office.
Find the township or town where you are now or find your county.