21613 ZIP Code — Cambridge, MD

Dorchester County, Maryland

ZIP code 21613 is located in Cambridge, Maryland, within Dorchester County. It covers approximately 153.67 square miles and serves a population of 17,945 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 443/410.

About ZIP code 21613

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $248,900. Owner-occupancy sits near the national average at 55%.

The gap between median ($51,094) and mean household income suggests income inequality — a small number of higher earners pull the average up. Poverty affects 18% of residents, above the national average. SNAP benefit usage at 26% of households reflects economic stress in the area. 35% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Overall, ZIP code 21613 reflects a community defined by economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.

17,945

population

153.67

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21613 ZIP code map

Cities in ZIP code 21613

Below are the cities the US Postal Service accepts for ZIP code 21613. Using any city not on this list may result in mail delivery delays.

City	Status
Cambridge	Preferred

Nearby ZIP codes

21677 Woolford (5 mi) 21622 Church Creek (6.9 mi) 21835 Linkwood (10.1 mi) 21626 Crapo (11.1 mi) 21631 East New Market (11.8 mi) 21673 Trappe (12.5 mi) 21869 Vienna (12.9 mi) 21634 Fishing Creek (13.5 mi) 21654 Oxford (14.7 mi) 21662 Royal Oak (16.9 mi) 21814 Bivalve (16.9 mi) 21643 Hurlock (17 mi)

Demographics updated 05/2026

Population
Total population	17,945
Population density	117 / sq mi
State FIPS	24
County FIPS	019

Geography
Land area	153.67 sq mi
Water area	40.89 sq mi
Latitude	38.4754
Longitude	-76.1022
Timezone	Eastern (ET)
Area code	443/410

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.1%	48.7%	28.2%
$50k – $100k	27.9%	30.4%	28.2%
$100k – $200k	13.7%	17.3%	30.1%
Over $200k	4.3%	3.7%	13.4%

Demographics & statistics

17,945

Population

117

People per sq mi

42.6

Median age

$51,094

Median household income

$33,699

Per capita income

$248,900

Median home value

$958

Median monthly rent

55.1%

Home ownership

18.3%

Poverty rate

6.1%

Unemployment

5,873

Housing units

22.2%

Bachelor's or higher

Age distribution

Male Female

476

Under 5

490

580

5–9

597

468

10–14

481

623

15–19

641

419

20–24

432

1,136

25–34

1,169

977

35–44

1,006

909

45–54

936

680

55–59

699

586

60–64

602

1,176

65–74

1,209

687

75–84

706

128

85+

132

← Male

Female →

Age summary

Group	Count	%
Under 18	3,913	21.8%
18 and over	14,032	78.2%
65 and over	4,038	22.5%
Median age	42.6 years

Race & ethnicity

White 49.7%

Black or African American 31.9%

Two or more races 8.3%

Hispanic or Latino 5.2%

Other race 3%

Asian 1.9%

Group	Count	%
White	9,413	49.7%
Black or African American	6,031	31.9%
Two or more races	1,574	8.3%
Hispanic or Latino	978	5.2%
Other race	571	3%
Asian	356	1.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.1%	48.7%	28.2%
$50k – $100k	27.9%	30.4%	28.2%
$100k – $200k	13.7%	17.3%	30.1%
Over $200k	4.3%	3.7%	13.4%

Under $10k 7.3%

$10k–$15k 5.9%

$15k–$25k 8.7%

$25k–$35k 9.9%

$35k–$50k 16.9%

$50k–$75k 16.0%

$75k–$100k 9.5%

$100k–$150k 13.9%

$150k–$200k 6.0%

$200k+ 5.9%

Range	% of households
Under $10k	7.3%
$10k–$15k	5.9%
$15k–$25k	8.7%
$25k–$35k	9.9%
$35k–$50k	16.9%
$50k–$75k	16.0%
$75k–$100k	9.5%
$100k–$150k	13.9%
$150k–$200k	6.0%
$200k+	5.9%
Median income	$51,094

Housing

Home values

Under $50k 3.7%

$50k–$100k 9.9%

$100k–$150k 8.3%

$150k–$200k 13.6%

$200k–$300k 25.6%

$300k–$500k 24.7%

$500k–$1M 12.1%

$1M+ 2.1%

Housing overview

Metric	Value
Median home value	$248,900
Median rent / month	$958
Owner occupied	55.1%
Renter occupied	44.9%
Vacant	19.2%
Single-family detached	66.5%
Large apartment buildings	5.3%
Mobile homes	3.2%
Median rooms	5.8
Avg household size (owned)	2.20

Year built

Era	%
2020 or later	0.2%
2010–2019	5.5%
2000–2009	21.7%
1990–1999	5.9%
1980–1989	8.0%
1970–1979	10.2%
1960–1969	6.5%
1950–1959	10.5%
1940–1949	6.5%
1939 or earlier	24.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	10.0%
2 bedrooms	32.8%
3 bedrooms	37.4%
4 bedrooms	16.2%
5+ bedrooms	3.5%

Vehicles per household

Vehicles	% of households
No vehicle	13.4%
1 vehicle	35.9%
2 vehicles	30.5%
3 or more	20.1%

Heating fuel

Fuel type	%
Utility gas	23.4%
Electricity	53.8%
Propane / LP gas	5.1%
Fuel oil	13.5%
Wood	1.5%
Solar	0.7%
No fuel used	0.9%

Households & families

Household type	Count	%
Married-couple family	2,740	36.8%
Cohabiting couple	522	7.0%
Male householder, no spouse	1,251	16.8%
Female householder, no spouse	2,934	39.4%
Households with children under 18	1,931	25.9%
Households with seniors (65+)	2,699	36.2%
Average household size	2.34

Marital status

Status	Male	Female
Never married	40.0%	34.0%
Married	42.8%	41.1%
Separated	2.6%	1.0%
Widowed	5.1%	8.7%
Divorced	9.5%	15.2%

Education

Less than 9th grade 3.0%

Some HS, no diploma 9.1%

HS graduate 36.9%

Some college, no degree 21.2%

Associate's degree 7.6%

Bachelor's degree 11.2%

Graduate / professional 11.0%

Metric	%
HS diploma or higher	87.9%
Bachelor's or higher	22.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	330	7.7%
Kindergarten	325	7.5%
Elementary school	1,563	36.3%
High school	1,133	26.3%
College / grad school	960	22.3%

Employment

Industry of employment

Education & healthcare 24.5%

Arts, food & hospitality 12.4%

Retail trade 12.1%

Professional & management 11.3%

Manufacturing 9.2%

Public administration 5.8%

Construction 5.7%

Other services 5.3%

Transportation & utilities 5.2%

Finance & real estate 3.5%

Agriculture & mining 2.9%

Information 1.1%

Wholesale trade 0.9%

Occupation

Category	%
Management, business & arts	34.1%
Service	26.4%
Sales & office	17.5%
Natural resources & construction	9.3%
Production & transportation	12.7%

Employment type

Type	%
Private sector	73.8%
Government	19.0%
Self-employed	6.8%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	75.5%
Carpool	13.1%
Public transit	0.3%
Walk	1.2%
Work from home	8.4%
Other means	1.5%
Avg commute (minutes)	23.8

Poverty

All people 18.3%

Under 18 years 31.7%

18 and over 14.5%

Married-couple families 3.3%

Female-led households 20.2%

Income support

Source	% of households
Social Security	35.1%
Retirement income	26.1%
Supplemental Security	6.2%
Cash public assistance	3.1%
Food stamps / SNAP	25.7%

Health indicators

Condition	%
Obesity	40.3%
High blood pressure	42.4%
High cholesterol	35.0%
Diabetes	14.6%
Heart disease	7.6%
Stroke	4.4%
Asthma	11.2%
Arthritis	30.1%
Kidney disease	3.8%
Pulmonary disease	8.5%
Cancer	7.6%

Behavior / access	%
Smoking	18.5%
Binge drinking	12.7%
No physical activity	29.0%
Less than 7 hrs sleep	35.1%
Depression	19.5%
Fair or poor health	18.4%
Poor mental health	14.9%
Poor physical health	11.3%
No health insurance	12.9%
Visited doctor (checkup)	81.8%
Visited dentist	57.1%
Cholesterol screening	91.7%
Teeth loss	16.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,273	9.1%

Disability	%
Any disability	18.7%
Under 18	13.2%
18–64 years	15.2%
65 and over	33.0%

Health insurance coverage

Type	%
Private insurance	53.3%
Public insurance	60.3%
No insurance	4.1%
Uninsured under 19	5.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	16,979	94.6%
Spanish	541	3.2%
Other Indo-European	477	2.8%
Asian & Pacific Islander	33	0.2%
Other languages	31	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	17,199	95.8%
Born in same state	16,780	93.5%
Born in different state	12,849	71.6%
Foreign born	419	2.3%
Naturalized citizen	746	4.2%
Not a US citizen	332	44.5%

Ancestry

Ancestry	Count	%
French	2,051	11.4%
Arab	1,766	9.8%
Italian	1,521	8.5%
English	106	0.6%
German	31	0.2%

Ancestry	Count	%
Polish	25	0.1%
Dutch	23	0.1%
Norwegian	21	0.1%
Irish	10	0.1%

Technology access

Metric	% of households
Computer access	41.5%
Internet access	92.8%

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

Frequently asked questions about ZIP code 21613

What city is ZIP code 21613 in?

ZIP code 21613 is primarily assigned to Cambridge, Maryland.

What county is ZIP code 21613 in?

ZIP code 21613 falls within Dorchester County, Maryland.

What is the poverty rate in ZIP code 21613?

18% of residents in ZIP code 21613 live below the poverty line, above the national average.

Does ZIP code 21613 have a large retiree population?

35% of households in ZIP code 21613 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 21613 have a large veteran population?

9% of civilians in ZIP code 21613 are veterans, above the national average of ~7%.

What is the population of ZIP code 21613?

ZIP code 21613 has an estimated population of 17,945 residents, with a density of 117 people per square mile.

What timezone is ZIP code 21613 in?

ZIP code 21613 observes the EST timezone.