Randallstown ZIP Code List — Baltimore County, MD

There is one unique ZIP code in Randallstown, Maryland and it is 21133. Area code: 443/410.

ZIP codes

8.96

sq mi land

0.01

sq mi water

443/410

area code

Randallstown, MD ZIP code map

About Randallstown, MD

Randallstown, Maryland is a vibrant community located within Baltimore County. This charming city offers a blend of suburban living with easy access to larger urban centers. With a single ZIP code, 21133, Randallstown serves as a unique hub for residents and visitors alike.

Location & geography

Randallstown is situated approximately 20 miles northwest of downtown Baltimore, making it a convenient location for commuters. It is bordered by several other cities, including Pikesville, Owings Mills, and Reisterstown, which are all just a short drive away. The city covers an area of 8.96 square miles of land, with a minimal water area of 0.01 square miles, contributing to its primarily suburban terrain.

Community & economy

The community in Randallstown is diverse and welcoming, characterized by a strong sense of neighborliness. The local economy benefits from a mix of retail, service industries, and school operations, with residents actively engaged in community events and local initiatives. Daily life in Randallstown includes enjoying local parks, schools, and various shopping options, creating a fulfilling suburban lifestyle.

Transportation

Randallstown is well-connected by major thoroughfares, including the Baltimore Beltway (I-695) and Route 140, facilitating easy travel to surrounding areas. The closest airport is Baltimore/Washington International Thurgood Marshall Airport, which is about 15 miles to the southeast. Public transportation options are also available, providing residents with convenient access to nearby cities.

History

Founded in the early 19th century, Randallstown has grown significantly over the years, transitioning from a small community to a thriving suburban city. Historically, the area was known for agriculture, but more recently, key industries have emerged, including retail and education. Notable events in its development include the construction of residential communities in the late 20th century, which have expanded the city's footprint.

Did you know?

A surprising fact about Randallstown is that it is home to the historic Old Court House, which reflects the area’s rich history. Additionally, Randallstown hosts various cultural events throughout the year, attracting visitors and fostering community spirit.

ZIP codes for Randallstown, MD (1)

ZIP code	City	County	Map
21133	Randallstown	Baltimore	View map

Demographics & statistics

32,070

Population

45.1

Median age

$83,305

Median household income

$38,898

Per capita income

$284,900

Median home value

$1,460

Median monthly rent

69.3%

Home ownership

10.8%

Poverty rate

6.2%

Unemployment

8,644

Housing units

36.4%

Bachelor's or higher

Age distribution

Male Female

594

Under 5

746

644

5–9

808

977

10–14

1,226

848

15–19

1,063

899

20–24

1,127

1,400

25–34

1,757

1,725

35–44

2,165

2,145

45–54

2,691

1,172

55–59

1,470

1,152

60–64

1,446

1,639

65–74

2,056

770

75–84

966

259

85+

325

← Male

Female →

Age summary

Group	Count	%
Under 18	6,047	18.9%
18 and over	26,023	81.1%
65 and over	6,015	18.8%
Median age	45.1 years

Race & ethnicity

Black or African American 76.3%

White 11.4%

Two or more races 4.5%

Hispanic or Latino 3.3%

Other race 2.3%

Asian 2%

American Indian / Alaska Native 0.2%

Group	Count	%
Black or African American	25,312	76.3%
White	3,778	11.4%
Two or more races	1,493	4.5%
Hispanic or Latino	1,103	3.3%
Other race	761	2.3%
Asian	648	2%
American Indian / Alaska Native	73	0.2%

Household income

Under $10k 3.0%

$10k–$15k 2.6%

$15k–$25k 6.2%

$25k–$35k 9.3%

$35k–$50k 8.5%

$50k–$75k 15.3%

$75k–$100k 15.1%

$100k–$150k 20.0%

$150k–$200k 11.3%

$200k+ 8.6%

Range	% of households
Under $10k	3.0%
$10k–$15k	2.6%
$15k–$25k	6.2%
$25k–$35k	9.3%
$35k–$50k	8.5%
$50k–$75k	15.3%
$75k–$100k	15.1%
$100k–$150k	20.0%
$150k–$200k	11.3%
$200k+	8.6%
Median income	$83,305

Housing

Home values

Under $50k 3.8%

$50k–$100k 0.7%

$100k–$150k 1.4%

$150k–$200k 4.8%

$200k–$300k 47.3%

$300k–$500k 38.4%

$500k–$1M 3.0%

$1M+ 0.6%

Housing overview

Metric	Value
Median home value	$284,900
Median rent / month	$1,460
Owner occupied	69.3%
Renter occupied	30.7%
Vacant	2.4%
Single-family detached	52.8%
Large apartment buildings	5.3%
Mobile homes	0.1%
Median rooms	6.7
Avg household size (owned)	2.79

Year built

Era	%
2020 or later	0.0%
2010–2019	3.8%
2000–2009	9.2%
1990–1999	17.7%
1980–1989	13.7%
1970–1979	17.8%
1960–1969	20.2%
1950–1959	11.1%
1940–1949	3.7%
1939 or earlier	2.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	11.1%
2 bedrooms	15.3%
3 bedrooms	41.5%
4 bedrooms	26.7%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	9.2%
1 vehicle	36.0%
2 vehicles	32.0%
3 or more	22.8%

Heating fuel

Fuel type	%
Utility gas	59.7%
Electricity	35.6%
Propane / LP gas	1.0%
Fuel oil	2.1%
Wood	0.1%
Solar	0.3%
No fuel used	1.1%

Households & families

Household type	Count	%
Married-couple family	4,866	40.4%
Cohabiting couple	482	4.0%
Male householder, no spouse	1,379	11.4%
Female householder, no spouse	5,324	44.2%
Households with children under 18	3,064	25.4%
Households with seniors (65+)	4,306	35.7%
Average household size	2.61

Marital status

Status	Male	Female
Never married	41.4%	33.2%
Married	46.3%	36.3%
Separated	2.6%	6.3%
Widowed	3.9%	11.3%
Divorced	5.8%	12.9%

Education

Less than 9th grade 3.5%

Some HS, no diploma 5.8%

HS graduate 24.5%

Some college, no degree 22.2%

Associate's degree 7.7%

Bachelor's degree 22.2%

Graduate / professional 14.2%

Metric	%
HS diploma or higher	90.7%
Bachelor's or higher	36.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	211	2.7%
Kindergarten	313	3.9%
Elementary school	2,793	35.1%
High school	1,583	19.9%
College / grad school	3,049	38.4%

Employment

Industry of employment

Education & healthcare 29.9%

Public administration 13.2%

Retail trade 10.4%

Professional & management 9.5%

Transportation & utilities 8.3%

Arts, food & hospitality 8.2%

Finance & real estate 5.7%

Other services 4.0%

Manufacturing 3.5%

Construction 3.1%

Information 2.5%

Wholesale trade 1.3%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	44.8%
Service	19.5%
Sales & office	19.7%
Natural resources & construction	3.1%
Production & transportation	13.0%

Employment type

Type	%
Private sector	68.9%
Government	26.2%
Self-employed	4.8%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	73.6%
Carpool	8.5%
Public transit	5.9%
Walk	0.7%
Other means	1.9%
Avg commute (minutes)	33.0

Poverty

All people 10.8%

Under 18 years 22.8%

18 and over 7.9%

Married-couple families 5.1%

Female-led households 13.6%

Income support

Source	% of households
Social Security	36.8%
Retirement income	30.6%
Supplemental Security	5.6%
Cash public assistance	3.2%
Food stamps / SNAP	13.7%

Health indicators

Condition	%
High blood pressure	40.7%
High cholesterol	30.6%
Heart disease	5.0%
Stroke	3.4%
Asthma	11.1%
Arthritis	24.7%
Kidney disease	3.0%
Pulmonary disease	4.7%
Cancer	6.0%

Behavior / access	%
Binge drinking	12.3%
No physical activity	24.4%
Less than 7 hrs sleep	38.8%
Fair or poor health	14.3%
Poor mental health	14.2%
Poor physical health	8.4%
No health insurance	10.9%
Visited doctor (checkup)	81.7%
Visited dentist	63.1%
Cholesterol screening	94.3%
Teeth loss	11.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,189	8.4%

Disability	%
Any disability	12.6%
Under 18	2.3%
18–64 years	9.6%
65 and over	33.9%

Health insurance coverage

Type	%
Private insurance	71.0%
Public insurance	41.1%
Uninsured under 19	4.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	30,730	95.8%
Spanish	1,584	5.2%
Other Indo-European	745	2.4%
Asian & Pacific Islander	266	0.9%
Other languages	101	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	27,488	85.7%
Born in same state	26,784	83.5%
Born in different state	20,273	63.2%
Foreign born	704	2.2%
Naturalized citizen	4,582	14.3%
Not a US citizen	2,729	59.6%

Ancestry

Ancestry	Count	%
Arab	1,069	3.3%
Italian	701	2.2%
French	660	2.1%
Irish	54	0.2%

Ancestry	Count	%
Polish	27	0.1%
Dutch	16	0%
English	12	0%
German	2	0%

Technology access

Metric	% of households
Computer access	37.6%
Internet access	96.8%

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

Frequently asked questions

What is the ZIP code for Randallstown, MD?

Randallstown, MD has one ZIP code: 21133.

What is the main ZIP code for Randallstown, MD?

The primary ZIP code for Randallstown, MD is 21133. The city uses area code 443 or 410 for phone service.

What county is Randallstown, MD in?

Randallstown is located in Baltimore County, Maryland.

How many ZIP codes are in Randallstown, MD?

Randallstown, MD has 1 ZIP code.

What is the ZIP code for the Randallstown community near the Randallstown High School area?

The Randallstown High School area and surrounding community are located in ZIP code 21133, which covers the entire Randallstown region in Baltimore County.

What ZIP code should I use for mailing addresses in the Randallstown town center near Liberty Road?

All mailing addresses in Randallstown, including the main commercial areas along Liberty Road, use the ZIP code 21133.