Deal Island ZIP Codes — Somerset County, MD

There is one unique ZIP code in Deal Island, Maryland and it is 21821. Area code: 410/667.

ZIP codes

14.74

sq mi land

5.07

sq mi water

410/667

area code

Deal Island, MD ZIP code map

About Deal Island, MD

Deal Island, Maryland, is a small, unincorporated community situated in Somerset County. Known for its scenic beauty and waterfront views, it embodies the charm of rural Eastern Shore living. Residents and visitors alike enjoy the tranquil atmosphere and the close-knit community spirit that defines this area.

Location & geography

Located on the Delmarva Peninsula, Deal Island is surrounded by water and natural beauty. It is approximately 11 miles from the town of Princess Anne and about 16 miles from the city of Salisbury, making these nearby cities easily accessible. The area encompasses a land area of 14.74 square miles, with an additional 5.07 square miles of water, contributing to its picturesque coastal terrain.

Community & economy

The community of Deal Island is characterized by its strong maritime heritage and fishing industry, which has been pivotal to its local economy. Life here revolves around outdoor activities such as fishing, boating, and nature watching, attracting both locals and visitors to the water's edge. The friendly atmosphere and cooperative spirit among residents create a welcoming environment for newcomers.

Transportation

Deal Island is accessible via State Highway 361, which connects to other regional thoroughfares. The nearest major airport is Salisbury-Ocean City Wicomico Regional Airport, located about 17 miles away, offering air travel options for residents and visitors. Public transit options are limited, reflecting the rural nature of the community.

History

Founded in the early 19th century, Deal Island's economy has historically relied on the fishing and crabbing industries, shaping its community identity. Over the years, it has remained a small, quiet settlement, with notable events tied to its maritime culture and local celebrations. The community continues to honor its roots while adapting to modern influences.

Did you know?

One surprising fact about Deal Island is that it hosts an annual crab feast, which brings together residents and visitors for a celebration of local seafood. Additionally, the island is a popular spot for birdwatching, as it is home to various waterfowl and other migratory species.

ZIP codes for Deal Island, MD (1)

ZIP code	City	County	Map
21821	Deal Island	Somerset	View map

Demographics & statistics

765

Population

45.3

Median age

$42,250

Median household income

$28,345

Per capita income

$176,600

Median home value

Median monthly rent

92.3%

Home ownership

11.1%

Poverty rate

5.3%

Unemployment

733

Housing units

11.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

109

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	66	8.6%
18 and over	699	91.4%
65 and over	234	30.6%
Median age	45.3 years

Race & ethnicity

White 85.3%

Two or more races 5.5%

Hispanic or Latino 5%

Black or African American 4.2%

Group	Count	%
White	687	85.3%
Two or more races	44	5.5%
Hispanic or Latino	40	5%
Black or African American	34	4.2%

Household income

Under $10k 6.3%

$10k–$15k 6.8%

$15k–$25k 14.2%

$25k–$35k 15.9%

$35k–$50k 11.0%

$50k–$75k 21.9%

$75k–$100k 10.7%

$100k–$150k 10.4%

$150k–$200k 2.7%

Range	% of households
Under $10k	6.3%
$10k–$15k	6.8%
$15k–$25k	14.2%
$25k–$35k	15.9%
$35k–$50k	11.0%
$50k–$75k	21.9%
$75k–$100k	10.7%
$100k–$150k	10.4%
$150k–$200k	2.7%
Median income	$42,250

Housing

Home values

Under $50k 3.3%

$50k–$100k 13.4%

$100k–$150k 24.0%

$150k–$200k 24.9%

$200k–$300k 14.2%

$300k–$500k 18.1%

$500k–$1M 2.1%

Housing overview

Metric	Value
Median home value	$176,600
Median rent / month	$0
Owner occupied	92.3%
Renter occupied	7.7%
Vacant	52.0%
Single-family detached	88.7%
Large apartment buildings	0.0%
Mobile homes	8.7%
Median rooms	5.8
Avg household size (owned)	2.12

Year built

Era	%
2020 or later	0.0%
2010–2019	2.9%
2000–2009	12.7%
1990–1999	5.3%
1980–1989	13.9%
1970–1979	13.7%
1960–1969	11.4%
1950–1959	6.2%
1940–1949	1.3%
1939 or earlier	32.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	39.9%
3 bedrooms	49.1%
4 bedrooms	9.1%
5+ bedrooms	1.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	51.2%
2 vehicles	27.1%
3 or more	21.6%

Heating fuel

Fuel type	%
Utility gas	4.9%
Electricity	47.9%
Propane / LP gas	18.6%
Fuel oil	22.5%
Wood	3.6%
Solar	1.1%

Households & families

Household type	Count	%
Married-couple family	113	31.0%
Cohabiting couple	8	2.2%
Male householder, no spouse	39	10.7%
Female householder, no spouse	205	56.2%
Households with children under 18	64	17.5%
Households with seniors (65+)	208	57.0%
Average household size	2.10

Marital status

Status	Male	Female
Never married	25.1%	14.8%
Married	55.3%	45.0%
Separated	8.1%	2.1%
Widowed	7.5%	28.9%
Divorced	4.1%	9.2%

Education

Less than 9th grade 2.7%

Some HS, no diploma 11.0%

HS graduate 35.2%

Some college, no degree 32.7%

Associate's degree 6.8%

Bachelor's degree 10.1%

Graduate / professional 1.5%

Metric	%
HS diploma or higher	86.3%
Bachelor's or higher	11.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	5	6.3%
Elementary school	23	28.8%
High school	29	36.3%
College / grad school	23	28.8%

Employment

Industry of employment

Retail trade 35.2%

Education & healthcare 18.2%

Construction 11.2%

Agriculture & mining 7.8%

Professional & management 7.3%

Wholesale trade 6.4%

Public administration 5.3%

Finance & real estate 3.4%

Manufacturing 2.5%

Other services 1.7%

Arts, food & hospitality 1.1%

Occupation

Category	%
Management, business & arts	23.7%
Service	12.3%
Sales & office	38.8%
Natural resources & construction	16.5%
Production & transportation	8.7%

Employment type

Type	%
Private sector	67.0%
Government	22.1%
Self-employed	10.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	44.5%
Carpool	45.6%
Public transit	0.0%
Walk	2.8%
Other means	1.7%
Avg commute (minutes)	30.3

Poverty

All people 11.1%

Under 18 years 14.3%

18 and over 10.9%

Married-couple families 0.0%

Female-led households 18.3%

Income support

Source	% of households
Social Security	58.1%
Retirement income	40.8%
Supplemental Security	6.8%
Cash public assistance	10.1%
Food stamps / SNAP	15.3%

Health indicators

Condition	%
High blood pressure	45.9%
High cholesterol	42.4%
Heart disease	9.2%
Stroke	4.5%
Asthma	10.4%
Arthritis	35.1%
Kidney disease	4.0%
Pulmonary disease	10.0%
Cancer	8.8%

Behavior / access	%
Binge drinking	12.8%
No physical activity	30.0%
Less than 7 hrs sleep	32.9%
Fair or poor health	17.8%
Poor mental health	14.3%
Poor physical health	12.2%
No health insurance	11.8%
Visited doctor (checkup)	79.6%
Visited dentist	55.9%
Cholesterol screening	92.4%
Teeth loss	15.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	54	7.7%

Disability	%
Any disability	27.2%
Under 18	18.2%
18–64 years	15.3%
65 and over	53.4%

Health insurance coverage

Type	%
Private insurance	62.9%
Public insurance	58.3%
Uninsured under 19	7.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	756	98.8%
Spanish	4	0.5%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	4	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	714	93.3%
Born in same state	714	93.3%
Born in different state	540	70.6%
Foreign born	0	0.0%
Naturalized citizen	51	6.7%
Not a US citizen	23	45.1%

Ancestry

Ancestry	Count	%
Arab	214	28%
French	201	26.3%

Ancestry	Count	%
Italian	24	3.1%

Technology access

Metric	% of households
Computer access	47.7%
Internet access	76.7%

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

Frequently asked questions

What ZIP codes does Deal Island, MD have?

Deal Island, MD has one ZIP code: 21821. Each ZIP code serves a distinct delivery area within the city and surrounding region.