Dennis ZIP Code List — Barnstable County, MA

There is one unique ZIP code in Dennis, Massachusetts and it is 02638. Area code: 508/774.

ZIP codes

5.64

sq mi land

0.24

sq mi water

508/774

area code

Dennis, MA ZIP code map

About Dennis, MA

Dennis, Massachusetts, is a picturesque town located on Cape Cod known for its beautiful beaches and charming New England atmosphere. Nestled in Barnstable County, it offers a mix of natural beauty and vibrant community life. Visitors and locals alike appreciate the town’s rich history and recreational opportunities.

Location & geography

Dennis is situated on the southern shore of Cape Cod, bordered by the towns of Yarmouth to the north and Harwich to the east. The town encompasses a total area of 5.64 square miles of land and includes a water area of 0.24 square miles, providing opportunities for various water-based activities. Dennis is approximately 15 miles from Hyannis and 30 miles from Provincetown, making it a central location for exploring the Cape.

Community & economy

The community of Dennis is characterized by its friendly, small-town feel and a strong emphasis on preserving its natural surroundings. The local economy thrives on tourism, with many visitors coming to enjoy its beaches, parks, and recreational options, such as boating and fishing. Daily life here revolves around community events, local shops, and seasonal farmers' markets, fostering a strong sense of connection among residents.

Transportation

Dennis is accessible via several major roadways, including Massachusetts Route 6A, which runs through the heart of the town. The nearest significant airport is Barnstable Municipal Airport, located about 15 miles away, offering convenient regional air travel options. Public transportation options are limited, but the Cape Cod Regional Transit Authority provides bus services within the area.

History

Dennis was first settled in 1628 and officially incorporated in 1793, rooted in agriculture and fishing. Over the years, the town has developed a robust tourism sector, drawing visitors with its scenic coastlines and historical sites. Notable events in its history include the establishment of several lighthouses and the development of a thriving arts community.

Did you know?

One little-known fact about Dennis is that it has one ZIP code, 02638, covering the entire town. Additionally, Dennis is home to a variety of historic landmarks, including ancient burial grounds and colonial-era homes.

ZIP codes for Dennis, MA (1)

ZIP code	City	County	Map
02638	Dennis	Barnstable	View map

Demographics & statistics

3,146

Population

61.5

Median age

$105,639

Median household income

$60,022

Per capita income

$661,100

Median home value

$1,514

Median monthly rent

82.2%

Home ownership

5.4%

Poverty rate

2.9%

Unemployment

2,796

Housing units

39.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

103

153

25–34

171

112

35–44

124

164

45–54

183

55–59

174

60–64

195

312

65–74

349

209

75–84

234

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	229	7.3%
18 and over	2,917	92.7%
65 and over	1,288	40.9%
Median age	61.5 years

Race & ethnicity

White 92.6%

Two or more races 2.2%

American Indian / Alaska Native 1.6%

Hispanic or Latino 1.3%

Asian 0.9%

Black or African American 0.8%

Other race 0.7%

Group	Count	%
White	2,950	92.6%
Two or more races	69	2.2%
American Indian / Alaska Native	51	1.6%
Hispanic or Latino	41	1.3%
Asian	28	0.9%
Black or African American	27	0.8%
Other race	21	0.7%

Household income

Under $10k 1.9%

$10k–$15k 1.1%

$15k–$25k 5.0%

$25k–$35k 2.7%

$35k–$50k 8.5%

$50k–$75k 13.3%

$75k–$100k 14.6%

$100k–$150k 20.5%

$150k–$200k 16.4%

$200k+ 16.0%

Range	% of households
Under $10k	1.9%
$10k–$15k	1.1%
$15k–$25k	5.0%
$25k–$35k	2.7%
$35k–$50k	8.5%
$50k–$75k	13.3%
$75k–$100k	14.6%
$100k–$150k	20.5%
$150k–$200k	16.4%
$200k+	16.0%
Median income	$105,639

Housing

Home values

Under $50k 0.9%

$150k–$200k 0.8%

$200k–$300k 3.9%

$300k–$500k 21.1%

$500k–$1M 55.1%

$1M+ 18.2%

Housing overview

Metric	Value
Median home value	$661,100
Median rent / month	$1,514
Owner occupied	82.2%
Renter occupied	17.8%
Vacant	53.1%
Single-family detached	87.6%
Large apartment buildings	0.6%
Mobile homes	0.0%
Median rooms	6.0
Avg household size (owned)	2.18

Year built

Era	%
2020 or later	0.0%
2010–2019	1.9%
2000–2009	5.2%
1990–1999	12.0%
1980–1989	15.2%
1970–1979	31.5%
1960–1969	14.4%
1950–1959	9.0%
1940–1949	3.7%
1939 or earlier	7.1%

Bedrooms

Size	% of units
No bedroom (studio)	1.0%
1 bedroom	4.8%
2 bedrooms	16.9%
3 bedrooms	48.8%
4 bedrooms	18.7%
5+ bedrooms	9.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	36.3%
2 vehicles	35.3%
3 or more	26.0%

Heating fuel

Fuel type	%
Utility gas	74.2%
Electricity	11.0%
Propane / LP gas	0.3%
Fuel oil	13.8%
Solar	0.6%

Households & families

Household type	Count	%
Married-couple family	647	45.3%
Cohabiting couple	164	11.5%
Male householder, no spouse	229	16.0%
Female householder, no spouse	389	27.2%
Households with children under 18	139	9.7%
Households with seniors (65+)	893	62.5%
Average household size	2.20

Marital status

Status	Male	Female
Never married	27.1%	16.4%
Married	55.6%	51.5%
Separated	0.0%	0.0%
Widowed	5.2%	14.6%
Divorced	12.0%	17.5%

Education

Less than 9th grade 0.0%

Some HS, no diploma 4.0%

HS graduate 31.0%

Some college, no degree 19.6%

Associate's degree 6.3%

Bachelor's degree 19.4%

Graduate / professional 19.7%

Metric	%
HS diploma or higher	96.0%
Bachelor's or higher	39.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	155	52.5%
High school	70	23.7%
College / grad school	70	23.7%

Employment

Industry of employment

Education & healthcare 23.6%

Other services 18.1%

Retail trade 11.7%

Professional & management 11.5%

Finance & real estate 11.2%

Arts, food & hospitality 5.6%

Public administration 5.3%

Wholesale trade 5.1%

Construction 4.3%

Manufacturing 2.6%

Information 0.6%

Transportation & utilities 0.5%

Occupation

Category	%
Management, business & arts	42.8%
Service	26.7%
Sales & office	14.4%
Natural resources & construction	10.5%
Production & transportation	5.7%

Employment type

Type	%
Private sector	73.8%
Government	13.8%
Self-employed	11.7%
Unpaid family workers	0.8%

Commute

Method	%
Drive alone	65.6%
Carpool	0.7%
Public transit	0.0%
Walk	0.7%
Other means	3.7%
Avg commute (minutes)	27.1

Poverty

All people 5.4%

Under 18 years 15.7%

18 and over 4.6%

Married-couple families 4.2%

Female-led households 14.3%

Income support

Source	% of households
Social Security	58.8%
Retirement income	50.5%
Supplemental Security	1.5%
Cash public assistance	1.6%
Food stamps / SNAP	5.0%

Health indicators

Condition	%
High blood pressure	37.9%
High cholesterol	38.2%
Heart disease	8.7%
Stroke	3.7%
Asthma	10.1%
Arthritis	33.6%
Kidney disease	3.7%
Pulmonary disease	6.9%
Cancer	11.3%

Behavior / access	%
Binge drinking	13.0%
No physical activity	18.0%
Less than 7 hrs sleep	26.3%
Fair or poor health	11.6%
Poor mental health	11.1%
Poor physical health	9.5%
No health insurance	4.8%
Visited doctor (checkup)	84.4%
Visited dentist	76.7%
Cholesterol screening	95.2%
Teeth loss	8.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	271	9.3%

Disability	%
Any disability	18.2%
Under 18	5.7%
18–64 years	16.5%
65 and over	22.5%

Health insurance coverage

Type	%
Private insurance	75.8%
Public insurance	48.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,142	99.9%
Spanish	11	0.4%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	11	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,967	94.3%
Born in same state	2,967	94.3%
Born in different state	2,318	73.7%
Foreign born	0	0.0%
Naturalized citizen	179	5.7%
Not a US citizen	122	68.2%

Ancestry

Ancestry	Count	%
Italian	962	30.6%
French	549	17.5%
Norwegian	292	9.3%
Arab	252	8%

Ancestry	Count	%
German	66	2.1%
Irish	9	0.3%
English	9	0.3%
Polish	9	0.3%

Technology access

Metric	% of households
Computer access	45.4%
Internet access	98.9%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Dennis, MA?

Dennis, MA has one ZIP code: 02638.

What is the main ZIP code for Dennis, MA?

The primary ZIP code for Dennis, MA is 02638. The city uses area code 508 or 774 for phone service.

What county is Dennis, MA in?

Dennis is located in Barnstable County, Massachusetts.

How many ZIP codes are in Dennis, MA?

Dennis, MA has 1 ZIP code.

What ZIP code covers Dennis Port, the popular beach community in Dennis, MA?

Dennis Port is located within ZIP code 02638, which serves the entire town of Dennis and includes this well-known coastal neighborhood.

What is the ZIP code for mail delivery to the Dennis Village area and town center?

Dennis Village and the central town area of Dennis use ZIP code 02638 for all postal delivery and mailing purposes.