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Dennis, MA
Census-designated place in Barnstable County, Massachusetts. ZIP codes: 02638.
Population
2,424
Land area
4.9sq mi
People per sq mi
494
ZIP codes
1
Dennis and its ZIP codes
Dennis at a glance
- Dennis is 45% less dense than Massachusetts as a whole.
- Households here earn a median of $109,882 a year, 6% more than the Massachusetts figure of $103,960.
- A typical owner-occupied home is valued at $944,500 (68% above Massachusetts) and median rent is $1,199 a month.
Local data for Dennis, MA
Counts from official public data
Housing and community stats
Dennis, MA, American Community Survey 2020-2024
Median household income
$109,882
Poverty rate
4.3%
Median home value
$944,500
Median rent
$1,199/mo
Homeownership
85.8%
Bachelor's or higher
56.5%
Median age
63.3
Average commute
15.6 min
Largest reported origins and ancestries: Irish Americans (509), Italian Americans (345), German Americans (102).
Economy and federal money
Jobs, pay, income and spending are for Barnstable County. PPP loans are for Dennis.
Unemployment rate
3.8%
Aug 2026, +0.1 pts in a year
Average annual pay
$67,176
96,491 jobs, 2025
Income per person
$96,768
BEA, 2024
Federal spending
$3.5B
FY 2026, $15,364 per person
PPP loans
$8.6M
132 loans, 1,402 jobs reported
How people get to work
Dennis, MA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone63.5%
- Carpooled2.1%
- Public transit1.8%
- Walked1.0%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.0%
- Worked from home31.7%
Average one-way commute: 15.6 minutes for people who do not work from home.
Environment and hazard risk
Dennis, MA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: coastal flooding
Storm events since 1996
739
Countywide, mostly high wind
Flood insurance policies
7,485
5.4% of homes, county
July high / Jan low
81° / 24°F
44.7 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Dennis, MA, CDC PLACES estimates
Obesity
24.4%
U.S. 33.3% -8.9 pts
Diabetes
11.0%
U.S. 12.1% -1.1 pts
Smoking
8.9%
U.S. 12.8% -3.9 pts
Uninsured (18-64)
2.9%
U.S. 11.1% -8.2 pts
ZIP codes in Dennis
1 in or overlapping Dennis. Population shown
Cities near Dennis
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Yarmouth PortCensus-designated place | 1.7 mi | 6 |
| East DennisCensus-designated place | 2.4 mi | 4.8 |
| South DennisCensus-designated place | 3.2 mi | 4.6 |
| South YarmouthCensus-designated place | 4.6 mi | 7 |
| West DennisCensus-designated place | 5 mi | 3.3 |
| Dennis PortCensus-designated place | 5.8 mi | 3 |
| Northwest HarwichCensus-designated place | 6.1 mi | 8 |
| West YarmouthCensus-designated place | 6.3 mi | 6.7 |
| BrewsterCensus-designated place | 6.8 mi | 3.9 |
| Harwich CenterCensus-designated place | 7.7 mi | 2.2 |
| Harwich PortCensus-designated place | 8.6 mi | 2.6 |
| East HarwichCensus-designated place | 9.4 mi | 8 |
| Barnstable TownCity | 9.5 mi | 59.9 |
| East SandwichCensus-designated place | 11 mi | 7.5 |
| OrleansCensus-designated place | 11 mi | 2.3 |
| West ChathamCensus-designated place | 12 mi | 2.9 |
Frequently asked questions
- What county is Dennis, MA in?
- Dennis is in Barnstable County, Massachusetts.
- What ZIP codes are in Dennis, MA?
- ZIP codes in or overlapping Dennis include 02638.
- What is the population of Dennis, MA?
- About 2,424 people live in Dennis, based on American Community Survey 5-year estimates.
- What cities are near Dennis?
- Nearby places include Yarmouth Port (1.7 mi), East Dennis (2.4 mi), South Dennis (3.2 mi), South Yarmouth (4.6 mi), West Dennis (5 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023