Zip code 21821: Deal Island, Maryland

Q: What city is zip code 21821?

21821 is assigned to Deal Island, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21821 in?

21821 is in Somerset County, Maryland.

Q: What is the population of 21821?

About 797 people live in 21821, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21821?

The median household income in 21821 is $60,341.

Q: What zip codes are near 21821?

The closest zip codes to 21821 are 21840, 21867, 21627, 21814, 21836.

Residential delivery areaSomerset CountyEastern Time

Population

797

Median household income

$60K

U.S. $81K

Median home value

$188K

U.S. $333K

Median rent

$1,615/mo

U.S. $1,413

Median age

U.S. 38.9

Land area

15 sq mi

54 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 21821

21821 is a small-town zip code in Deal Island, Maryland (Somerset County), covering 15 sq mi of land. About 797 people live here, or 54 per square mile. The median resident is 46 years old, compared with 38.9 nationally.

The median household earns $60,341 a year, 25% below the national median of $80,734. 19.2% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $188,200, or 3.1 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 83% of occupied homes are lived in by their owners, and renters pay a median of $1,615 a month.

11% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 30.9 minutes each way, and 5% of workers work from home; most commuters carpool. The most common jobs among working residents are in office and administrative support; sales; and construction and repair. 18% of them are self-employed (U.S.: 10%).

How 21821 compares

Sorted from highest to lowest national percentile

Housing vacancy44.8%
99th
U.S. 10.1% · MD 7.7%15th of 441 in MD
Rent-burdened renters69.2%
97th
WeaknessU.S. 51.1% · MD 51.5%61st of 404 in MD
Residents 65 and older30%
97th
U.S. 17.2% · MD 16.7%51st of 446 in MD
Self-employed workers18.1%
96th
U.S. 10% · MD 8.7%48th of 444 in MD
Government workers24.8%
94th
U.S. 14.5% · MD 22.5%143rd of 444 in MD
Median age46
89th
U.S. 38.9 · MD 39.4120th of 446 in MD
Homeownership rate83.2%
85th
StrengthU.S. 65.2% · MD 67.6%206th of 441 in MD
Poverty rate19.2%
83rd
WeaknessU.S. 12.5% · MD 9.4%41st of 441 in MD
Average commute30.9 min
78th
U.S. 26.4 min · MD 31.1 min224th of 421 in MD
Median gross rent$1,615
62nd
U.S. $1,413 · MD $1,705172nd of 338 in MD
Foreign-born residents7.4%
40th
U.S. 14.1% · MD 16.6%202nd of 446 in MD
Income inequality (Gini)0.419
36th
U.S. 0.483 · MD 0.456173rd of 438 in MD
Median earnings per worker$43,558
35th
U.S. $49,666 · MD $61,200377th of 443 in MD
Unemployment rate4%
34th
U.S. 5.2% · MD 4.9%218th of 444 in MD
Veterans4.6%
33rd
U.S. 6.2% · MD 6.8%349th of 446 in MD
Median household income$60,341
21st
U.S. $80,734 · MD $103,678386th of 414 in MD
Per capita income$30,716
21st
U.S. $44,673 · MD $52,979412th of 446 in MD
Median home value$188,200
19th
U.S. $332,700 · MD $419,900397th of 421 in MD
Healthcare workers7.3%
19th
U.S. 9.7% · MD 9%263rd of 444 in MD
Population density54/sq mi
8th
U.S. 95/sq mi · MD 639/sq mi398th of 446 in MD
Work from home5.1%
8th
U.S. 15.1% · MD 19.3%400th of 444 in MD
Diversity index12.3
6th
U.S. 61.4 · MD 67.7393rd of 446 in MD
Residents under 1812.4%
4th
U.S. 22% · MD 22.2%397th of 446 in MD
Bachelor's degree or higher11%
3rd
WeaknessU.S. 35.7% · MD 43.4%429th of 445 in MD
Population797
1st
U.S. 334,922,499 · MD 6,206,011365th of 446 in MD
Broadband access71.7%
1st
WeaknessU.S. 91% · MD 92.4%428th of 441 in MD
Uninsured rate0%
1st
StrengthU.S. 8.4% · MD 6.3%435th of 444 in MD
Tech workers0%
1st
U.S. 3.8% · MD 6.4%429th of 444 in MD

Measure	21821	Somerset	MD	U.S.	National percentile	Rank in MD
Housing vacancy	44.8%	23.6%	7.7%	10.1%	99th	15th of 441
Rent-burdened rentersWeakness	69.2%	48.5%	51.5%	51.1%	97th	61st of 404
Residents 65 and older	30%	17.8%	16.7%	17.2%	97th	51st of 446
Self-employed workers	18.1%	12.3%	8.7%	10%	96th	48th of 444
Government workers	24.8%	30.6%	22.5%	14.5%	94th	143rd of 444
Median age	46	38.1	39.4	38.9	89th	120th of 446
Homeownership rateStrength	83.2%	73.1%	67.6%	65.2%	85th	206th of 441
Poverty rateWeakness	19.2%	16.4%	9.4%	12.5%	83rd	41st of 441
Average commute	30.9 min	24.5 min	31.1 min	26.4 min	78th	224th of 421
Median gross rent	$1,615	$1,013	$1,705	$1,413	62nd	172nd of 338
Foreign-born residents	7.4%	5.1%	16.6%	14.1%	40th	202nd of 446
Income inequality (Gini)	0.419	0.452	0.456	0.483	36th	173rd of 438
Median earnings per worker	$43,558	$42,465	$61,200	$49,666	35th	377th of 443
Unemployment rate	4%	7.5%	4.9%	5.2%	34th	218th of 444
Veterans	4.6%	6.7%	6.8%	6.2%	33rd	349th of 446
Median household income	$60,341	$64,943	$103,678	$80,734	21st	386th of 414
Per capita income	$30,716	$28,462	$52,979	$44,673	21st	412th of 446
Median home value	$188,200	$173,200	$419,900	$332,700	19th	397th of 421
Healthcare workers	7.3%	7.6%	9%	9.7%	19th	263rd of 444
Population density	54/sq mi	78/sq mi	639/sq mi	95/sq mi	8th	398th of 446
Work from home	5.1%	9.2%	19.3%	15.1%	8th	400th of 444
Diversity index	12.3	58.9	67.7	61.4	6th	393rd of 446
Residents under 18	12.4%	17.5%	22.2%	22%	4th	397th of 446
Bachelor's degree or higherWeakness	11%	19.4%	43.4%	35.7%	3rd	429th of 445
Population	797	24,822	6,206,011	334,922,499	1st	365th of 446
Broadband accessWeakness	71.7%	83.4%	92.4%	91%	1st	428th of 441
Uninsured rateStrength	0%	3.6%	6.3%	8.4%	1st	435th of 444
Tech workers	0%	1.4%	6.4%	3.8%	1st	429th of 444

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

5–17

18–24

25–34

24%

35–44

45–54

19%

55–64

17%

65–74

13%

75+

Median age

Under 18

12.4%

65 and over

30%

Race and ethnicity

White93%
Black0%
Hispanic6%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0.5%

Diversity index

12.3

U.S. 61.4

Foreign-born

7.4%

U.S. 14.1%

Born in state

70.5%

Language spoken at home (households)

English only

95%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 375
Average household size: 2.1
Family households: 56.8%
Married couples: 36.8%
Living alone: 38.4%
Veterans (of adults): 4.6%
Male / female: 45% / 55%

Income and poverty

Household income distribution

<$25k

32%

$25–50k

14%

$50–75k

25%

$75–100k

$100–150k

19%

$150–200k

$200k+

Median household income

21821

$60,341

Somerset Co.

$64,943

Maryland

$103,678

United States

$80,734

Per capita income

$30,716

U.S. $44,673

Poverty rate

19.2%

U.S. 12.5%

Households earning $150K+

3.7%

U.S. 23%

Income inequality (Gini)

0.419

U.S. 0.483

Housing

Median home value

21821

$188,200

Somerset Co.

$173,200

Maryland

$419,900

United States

$332,700

Median gross rent

21821

$1,615

Somerset Co.

$1,013

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

95%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 679
Owner-occupied: 83.2%
Vacant: 44.8%
Median year built: 1969
Median rooms: 6.3
Renters paying 30%+ of income: 69.2%
Renters paying 50%+ of income: 69.2%
Home value to income: 3.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

47%

Carpooled

47%

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

10–19

20%

20–29

30–44

46%

45–59

18%

60+

Average commute

30.9 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

44.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

23%

Sales

15%

Construction and repair

13%

Legal and social services

10%

Farming, fishing and forestry

10%

Business and finance

Healthcare

Production

Police and fire

Management

Education

Food service

Computer and math

Engineering and science

Arts, media and sports

Cleaning and personal care

Transportation and moving

Industries

Retail

27%

Health care and social assistance

17%

Construction

17%

Agriculture and mining

11%

Education

Public administration

Wholesale

Professional and technical services

Finance, insurance and real estate

Restaurants and hotels

Manufacturing

Transportation, warehousing and utilities

Admin, support and management

Other services

Information

Arts and recreation

Median earnings per worker

$43,558

U.S. $49,666

Self-employed

18.1%

U.S. 10%

Government workers

24.8%

U.S. 14.5%

Nonprofit workers

7.9%

U.S. 8.8%

Median earnings by type of work

Type of work	21821	U.S.
Management, business, science and arts	$56,250	$74,888
Service	$61,591	$26,804
Sales and office	$23,277	$40,476
Construction and maintenance	$32,404	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

10%

High school

37%

Some college

38%

Associate's

Bachelor's

Graduate

High school graduate or higher: 90.1%
Bachelor's degree or higher: 11%
Graduate or professional degree: 2.2%
Households with broadband: 71.7%
Cable, fiber or DSL: 56%
No internet access: 27.2%
Without health insurance: 0%
Limited-English households: 0%

Geography

City (USPS): Deal Island
State: Maryland
County: Somerset County
Center point: 38.1646° N, 75.9167° W
Land area: 15 sq mi
Water area: 5.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Dames Quarter (unincorporated)68% of zip
Deal Island (unincorporated)21% of zip
Chance (unincorporated)11% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 21821

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21840	Nanticoke, MD	5.9 mi	576	—	under $10,000
21867	Upper Fairmount, MD	7.7 mi	60	—	—
21627	Crocheron, MD	8.5 mi	26	$96,250	$225,000
21814	Bivalve, MD	8.9 mi	217	—	—
21836	Manokin, MD · PO box	9.4 mi	—	—	—
21865	Tyaskin, MD	9.5 mi	320	$83,155	$191,000
21871	Westover, MD	10 mi	1,764	$50,524	$185,900
21672	Toddville, MD	11 mi	161	$83,269	—
21853	Princess Anne, MD	11 mi	10,537	$69,697	$208,300
21890	Westover, MD	12 mi	3,289	—	—
21675	Wingate, MD	13 mi	38	—	—
21856	Quantico, MD	13 mi	1,037	$88,045	$380,600

Questions about 21821

What city is zip code 21821?

21821 is assigned to Deal Island, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21821 in?

21821 is in Somerset County, Maryland.

What is the population of 21821?

About 797 people live in 21821, according to the Census Bureau's American Community Survey.

What time zone is 21821 in?

21821 is in Eastern Time.

What is the median household income in 21821?

The median household income in 21821 is $60,341.

What zip codes are near 21821?

The closest zip codes to 21821 are 21840, 21867, 21627, 21814, 21836.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21821, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.