Middle River ZIP Codes — Baltimore County, MD

There is one unique ZIP code in Middle River, Maryland and it is 21220. Area code: 443/410/667.

ZIP codes

21.18

sq mi land

6.67

sq mi water

443/410/667

area code

Middle River, MD ZIP code map

About Middle River, MD

Middle River is a vibrant community located in Maryland, specifically within Baltimore County. This charming city is known for its picturesque views and close-knit atmosphere, making it a desirable place to live and visit. With a unique blend of suburban life and access to urban amenities, Middle River offers a diverse lifestyle for its residents.

Location & geography

Middle River is nestled in the northeastern part of Baltimore County and is surrounded by several key cities, including Essex to the south, Rosedale to the west, and Towson to the northwest. The area boasts a total land area of 42.36 square miles and includes approximately 13.34 square miles of water, featureing beautiful waterfronts and lush parks. Its proximity to the Chesapeake Bay enhances both its scenic beauty and recreational opportunities.

Community & economy

The character of Middle River is defined by its friendly neighborhoods and strong community spirit, creating a welcoming environment for both residents and visitors. Historically, Middle River has been linked to various industries, including shipbuilding and aerospace, with significant contributions from companies in these sectors. Daily life in Middle River often revolves around locally-owned businesses, family gatherings, and outdoor activities, fostering a tight-knit community feel.

Transportation

Middle River is conveniently accessible via several major highways, including Interstate 95 and Maryland Route 40, which facilitate travel to neighboring cities and the greater Baltimore area. The nearest airport is Baltimore/Washington International Thurgood Marshall Airport, providing both domestic and international flights. Public transit options are available, connecting residents to the wider region and enhancing mobility.

History

Middle River was established as a significant shipbuilding center during the 19th century, which played a crucial role in its early development. The area's historical roots can be traced back to its involvement in various industrial enterprises, shaping its growth throughout the years. Significant events, such as the rise of the local aerospace industry, have marked Middle River as an important contributor to Maryland’s economy.

Did you know?

One surprising fact about Middle River is that it is home to the historic Martin State Airport, which was once a key military installation and now serves as a vital hub for general aviation. Additionally, the scenic Gunpowder River in the area offers ample opportunities for fishing and boating, attracting outdoor enthusiasts year-round.

ZIP codes for Middle River, MD (1)

ZIP code	City	County	Map
21220	Middle River	Baltimore	View map

Demographics & statistics

42,652

Population

37.4

Median age

$77,571

Median household income

$39,690

Per capita income

$260,400

Median home value

$1,561

Median monthly rent

66.8%

Home ownership

16.4%

Poverty rate

4.2%

Unemployment

12,483

Housing units

26.4%

Bachelor's or higher

Age distribution

Male Female

1,513

Under 5

1,612

1,354

5–9

1,441

1,039

10–14

1,107

1,234

15–19

1,314

1,300

20–24

1,384

3,093

25–34

3,293

2,783

35–44

2,964

2,749

45–54

2,927

1,551

55–59

1,652

1,352

60–64

1,440

1,616

65–74

1,720

868

75–84

924

204

85+

218

← Male

Female →

Age summary

Group	Count	%
Under 18	9,486	22.2%
18 and over	33,166	77.8%
65 and over	5,550	13.0%
Median age	37.4 years

Race & ethnicity

White 56.6%

Black or African American 24.6%

Asian 5.4%

Two or more races 4.9%

Hispanic or Latino 4.2%

Other race 3.7%

American Indian / Alaska Native 0.5%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	25,211	56.6%
Black or African American	10,964	24.6%
Asian	2,406	5.4%
Two or more races	2,188	4.9%
Hispanic or Latino	1,862	4.2%
Other race	1,640	3.7%
American Indian / Alaska Native	207	0.5%
Native Hawaiian / Pacific Islander	36	0.1%

Household income

Under $10k 8.0%

$10k–$15k 1.3%

$15k–$25k 5.5%

$25k–$35k 6.1%

$35k–$50k 10.8%

$50k–$75k 16.2%

$75k–$100k 13.5%

$100k–$150k 18.7%

$150k–$200k 9.4%

$200k+ 10.5%

Range	% of households
Under $10k	8.0%
$10k–$15k	1.3%
$15k–$25k	5.5%
$25k–$35k	6.1%
$35k–$50k	10.8%
$50k–$75k	16.2%
$75k–$100k	13.5%
$100k–$150k	18.7%
$150k–$200k	9.4%
$200k+	10.5%
Median income	$77,571

Housing

Home values

Under $50k 7.0%

$50k–$100k 7.5%

$100k–$150k 5.6%

$150k–$200k 11.8%

$200k–$300k 28.6%

$300k–$500k 27.1%

$500k–$1M 11.0%

$1M+ 1.3%

Housing overview

Metric	Value
Median home value	$260,400
Median rent / month	$1,561
Owner occupied	66.8%
Renter occupied	33.2%
Vacant	9.2%
Single-family detached	44.5%
Large apartment buildings	6.5%
Mobile homes	7.5%
Median rooms	5.9
Avg household size (owned)	2.59

Year built

Era	%
2020 or later	1.1%
2010–2019	9.6%
2000–2009	14.8%
1990–1999	11.8%
1980–1989	13.3%
1970–1979	12.3%
1960–1969	9.5%
1950–1959	12.5%
1940–1949	11.8%
1939 or earlier	3.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	9.4%
2 bedrooms	26.3%
3 bedrooms	47.7%
4 bedrooms	13.0%
5+ bedrooms	2.1%

Vehicles per household

Vehicles	% of households
No vehicle	8.1%
1 vehicle	37.4%
2 vehicles	34.1%
3 or more	20.4%

Heating fuel

Fuel type	%
Utility gas	37.7%
Electricity	44.5%
Propane / LP gas	2.7%
Fuel oil	13.0%
Wood	0.6%
Solar	0.2%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	7,135	44.0%
Cohabiting couple	1,220	7.5%
Male householder, no spouse	2,958	18.2%
Female householder, no spouse	4,919	30.3%
Households with children under 18	4,945	30.5%
Households with seniors (65+)	3,897	24.0%
Average household size	2.62

Marital status

Status	Male	Female
Never married	37.1%	37.6%
Married	48.8%	40.8%
Separated	1.9%	1.8%
Widowed	4.2%	8.3%
Divorced	7.9%	11.5%

Education

Less than 9th grade 5.2%

Some HS, no diploma 6.1%

HS graduate 35.6%

Some college, no degree 18.6%

Associate's degree 8.2%

Bachelor's degree 16.7%

Graduate / professional 9.7%

Metric	%
HS diploma or higher	88.7%
Bachelor's or higher	26.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	348	3.7%
Kindergarten	842	8.9%
Elementary school	3,687	39.1%
High school	2,203	23.4%
College / grad school	2,348	24.9%

Employment

Industry of employment

Education & healthcare 25.1%

Retail trade 11.9%

Professional & management 9.2%

Construction 8.7%

Transportation & utilities 8.4%

Public administration 8.1%

Manufacturing 7.2%

Finance & real estate 7.2%

Arts, food & hospitality 6.1%

Other services 3.8%

Wholesale trade 2.8%

Information 1.4%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	38.6%
Service	14.5%
Sales & office	21.6%
Natural resources & construction	10.5%
Production & transportation	14.8%

Employment type

Type	%
Private sector	80.1%
Government	15.7%
Self-employed	4.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	76.0%
Carpool	10.1%
Public transit	2.7%
Walk	1.3%
Other means	2.1%
Avg commute (minutes)	31.2

Poverty

All people 16.4%

Under 18 years 28.3%

18 and over 13.1%

Married-couple families 9.7%

Female-led households 22.4%

Income support

Source	% of households
Social Security	27.3%
Retirement income	23.7%
Supplemental Security	5.0%
Cash public assistance	4.9%
Food stamps / SNAP	17.6%

Health indicators

Condition	%
High blood pressure	33.5%
High cholesterol	32.4%
Heart disease	5.7%
Stroke	2.9%
Asthma	10.3%
Arthritis	24.7%
Kidney disease	2.7%
Pulmonary disease	6.3%
Cancer	6.4%

Behavior / access	%
Binge drinking	15.9%
No physical activity	24.1%
Less than 7 hrs sleep	33.8%
Fair or poor health	13.9%
Poor mental health	16.0%
Poor physical health	9.1%
No health insurance	11.9%
Visited doctor (checkup)	75.3%
Visited dentist	61.6%
Cholesterol screening	91.0%
Teeth loss	12.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,020	6.1%

Disability	%
Any disability	13.4%
Under 18	3.3%
18–64 years	12.7%
65 and over	34.6%

Health insurance coverage

Type	%
Private insurance	67.9%
Public insurance	38.8%
Uninsured under 19	7.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	39,527	92.7%
Spanish	1,923	4.9%
Other Indo-European	681	1.7%
Asian & Pacific Islander	344	0.9%
Other languages	179	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	37,738	88.5%
Born in same state	36,939	86.6%
Born in different state	29,041	68.1%
Foreign born	799	1.9%
Naturalized citizen	4,914	11.5%
Not a US citizen	2,068	42.1%

Ancestry

Ancestry	Count	%
Italian	5,077	11.9%
French	2,700	6.3%
Arab	1,402	3.3%
English	324	0.8%
Irish	91	0.2%

Ancestry	Count	%
Norwegian	58	0.1%
Polish	43	0.1%
Dutch	20	0%
German	16	0%

Technology access

Metric	% of households
Computer access	38.1%
Internet access	95.2%

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

Frequently asked questions

What ZIP codes does Middle River, MD have?

Middle River, MD has one ZIP code: 21220. Each ZIP code serves a distinct delivery area within the city and surrounding region.