21030 ZIP Code — Cockeysville, MD

Baltimore County, Maryland

ZIP code 21030 is located in Cockeysville, Maryland, within Baltimore County. It covers approximately 24.05 square miles and serves a population of 25,133 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410/443.

About ZIP code 21030

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $413,600. Renters make up the majority at 56%, typical of denser urban areas.

The gap between median ($92,333) and mean household income suggests income inequality — a small number of higher earners pull the average up.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.

25,133

population

24.05

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21030 ZIP code map

Cities in ZIP code 21030

Below are the cities the US Postal Service accepts for ZIP code 21030. Using any city not on this list may result in mail delivery delays.

City	Status
Cockeysville	Acceptable

Demographics updated 05/2026

Population
Total population	25,133
Population density	1,045 / sq mi
State FIPS	24
County FIPS	005

Geography
Land area	24.05 sq mi
Water area	0.48 sq mi
Latitude	39.4919
Longitude	-76.6650
Timezone	Eastern (ET)
Area code	410/443

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	31.1%	31.4%	28.2%
$50k – $100k	28.4%	30.7%	28.2%
$100k – $200k	27.6%	28.5%	30.1%
Over $200k	12.9%	9.5%	13.4%

Demographics & statistics

25,133

Population

1,045

People per sq mi

36.9

Median age

$92,333

Median household income

$59,079

Per capita income

$413,600

Median home value

$1,450

Median monthly rent

43.7%

Home ownership

8.9%

Poverty rate

4.3%

Unemployment

5,197

Housing units

54.1%

Bachelor's or higher

Age distribution

Male Female

616

Under 5

582

807

5–9

762

649

10–14

613

685

15–19

647

871

20–24

821

2,460

25–34

2,320

1,718

35–44

1,620

1,700

45–54

1,604

699

55–59

659

630

60–64

594

1,197

65–74

1,130

588

75–84

554

312

85+

295

← Male

Female →

Age summary

Group	Count	%
Under 18	4,748	18.9%
18 and over	20,385	81.1%
65 and over	4,076	16.2%
Median age	36.9 years

Race & ethnicity

White 54.8%

Black or African American 16.1%

Two or more races 9.4%

Asian 8.7%

Hispanic or Latino 7.6%

Other race 3.2%

American Indian / Alaska Native 0.1%

Group	Count	%
White	14,915	54.8%
Black or African American	4,390	16.1%
Two or more races	2,570	9.4%
Asian	2,357	8.7%
Hispanic or Latino	2,063	7.6%
Other race	882	3.2%
American Indian / Alaska Native	19	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	31.1%	31.4%	28.2%
$50k – $100k	28.4%	30.7%	28.2%
$100k – $200k	27.6%	28.5%	30.1%
Over $200k	12.9%	9.5%	13.4%

Under $10k 2.9%

$10k–$15k 1.8%

$15k–$25k 5.0%

$25k–$35k 4.4%

$35k–$50k 12.3%

$50k–$75k 14.4%

$75k–$100k 13.4%

$100k–$150k 16.2%

$150k–$200k 12.3%

$200k+ 17.3%

Range	% of households
Under $10k	2.9%
$10k–$15k	1.8%
$15k–$25k	5.0%
$25k–$35k	4.4%
$35k–$50k	12.3%
$50k–$75k	14.4%
$75k–$100k	13.4%
$100k–$150k	16.2%
$150k–$200k	12.3%
$200k+	17.3%
Median income	$92,333

Housing

Home values

Under $50k 2.1%

$50k–$100k 0.4%

$100k–$150k 3.3%

$150k–$200k 2.3%

$200k–$300k 10.0%

$300k–$500k 48.3%

$500k–$1M 25.8%

$1M+ 7.8%

Housing overview

Metric	Value
Median home value	$413,600
Median rent / month	$1,450
Owner occupied	43.7%
Renter occupied	56.3%
Vacant	4.7%
Single-family detached	32.3%
Large apartment buildings	8.8%
Mobile homes	0.1%
Median rooms	5.0
Avg household size (owned)	2.56

Year built

Era	%
2020 or later	0.0%
2010–2019	4.6%
2000–2009	7.8%
1990–1999	14.7%
1980–1989	15.2%
1970–1979	30.3%
1960–1969	16.7%
1950–1959	6.8%
1940–1949	0.6%
1939 or earlier	3.3%

Bedrooms

Size	% of units
No bedroom (studio)	2.3%
1 bedroom	23.4%
2 bedrooms	29.7%
3 bedrooms	21.6%
4 bedrooms	14.3%
5+ bedrooms	8.7%

Vehicles per household

Vehicles	% of households
No vehicle	5.5%
1 vehicle	41.7%
2 vehicles	38.3%
3 or more	14.5%

Heating fuel

Fuel type	%
Utility gas	45.6%
Electricity	43.4%
Propane / LP gas	5.8%
Fuel oil	4.8%
Wood	0.1%
Solar	0.1%

Households & families

Household type	Count	%
Married-couple family	4,411	41.3%
Cohabiting couple	996	9.3%
Male householder, no spouse	2,641	24.7%
Female householder, no spouse	2,638	24.7%
Households with children under 18	2,669	25.0%
Households with seniors (65+)	2,524	23.6%
Average household size	2.30

Marital status

Status	Male	Female
Never married	40.2%	36.0%
Married	47.7%	45.3%
Separated	3.2%	1.6%
Widowed	1.3%	7.0%
Divorced	7.5%	10.1%

Education

Less than 9th grade 2.7%

Some HS, no diploma 2.6%

HS graduate 18.7%

Some college, no degree 17.0%

Associate's degree 4.9%

Bachelor's degree 32.9%

Graduate / professional 21.2%

Metric	%
HS diploma or higher	94.7%
Bachelor's or higher	54.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	239	4.3%
Kindergarten	394	7.1%
Elementary school	2,150	38.9%
High school	930	16.8%
College / grad school	1,820	32.9%

Employment

Industry of employment

Education & healthcare 21.0%

Professional & management 16.7%

Manufacturing 10.5%

Retail trade 10.5%

Finance & real estate 8.6%

Arts, food & hospitality 8.4%

Public administration 5.8%

Other services 4.8%

Construction 4.1%

Transportation & utilities 3.8%

Information 2.7%

Wholesale trade 2.0%

Agriculture & mining 1.1%

Occupation

Category	%
Management, business & arts	51.8%
Service	13.5%
Sales & office	20.2%
Natural resources & construction	5.0%
Production & transportation	9.5%

Employment type

Type	%
Private sector	83.1%
Government	11.5%
Self-employed	5.1%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	77.8%
Carpool	6.1%
Public transit	1.2%
Walk	1.1%
Work from home	11.6%
Other means	2.3%
Avg commute (minutes)	25.6

Poverty

All people 8.9%

Under 18 years 9.4%

18 and over 8.8%

Married-couple families 3.4%

Female-led households 13.4%

Income support

Source	% of households
Social Security	23.1%
Retirement income	18.8%
Supplemental Security	2.7%
Cash public assistance	3.6%
Food stamps / SNAP	8.3%

Health indicators

Condition	%
Obesity	27.7%
High blood pressure	29.9%
High cholesterol	31.2%
Diabetes	7.5%
Heart disease	4.6%
Stroke	2.2%
Asthma	9.2%
Arthritis	21.4%
Kidney disease	2.3%
Pulmonary disease	4.3%
Cancer	6.4%

Behavior / access	%
Smoking	12.0%
Binge drinking	15.3%
No physical activity	19.4%
Less than 7 hrs sleep	30.9%
Depression	17.8%
Fair or poor health	10.1%
Poor mental health	13.5%
Poor physical health	6.9%
No health insurance	9.6%
Visited doctor (checkup)	75.4%
Visited dentist	68.3%
Cholesterol screening	92.1%
Teeth loss	7.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	975	4.8%

Disability	%
Any disability	9.4%
Under 18	3.2%
18–64 years	6.7%
65 and over	29.2%

Health insurance coverage

Type	%
Private insurance	78.1%
Public insurance	29.8%
No insurance	5.2%
Uninsured under 19	3.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,935	95.2%
Spanish	1,742	7.3%
Other Indo-European	745	3.1%
Asian & Pacific Islander	564	2.4%
Other languages	360	1.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	21,142	84.1%
Born in same state	20,624	82.1%
Born in different state	13,437	53.5%
Foreign born	518	2.1%
Naturalized citizen	3,991	15.9%
Not a US citizen	2,157	54.0%

Ancestry

Ancestry	Count	%
Italian	3,413	13.6%
French	1,938	7.7%
Arab	1,307	5.2%
Polish	216	0.9%
English	151	0.6%

Ancestry	Count	%
Irish	80	0.3%
Norwegian	50	0.2%
German	39	0.2%
Dutch	10	0%

Technology access

Metric	% of households
Computer access	42.5%
Internet access	96.4%

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

Frequently asked questions about ZIP code 21030

What city is ZIP code 21030 in?

ZIP code 21030 is primarily assigned to Cockeysville, Maryland.

What county is ZIP code 21030 in?

ZIP code 21030 falls within Baltimore County, Maryland.

How educated is the population of ZIP code 21030?

54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 21030 mostly rentals?

56% of occupied units in ZIP code 21030 are renter-occupied.

What is the typical home value in ZIP code 21030?

The median home value in ZIP code 21030 is $413,600.

What is the population of ZIP code 21030?

ZIP code 21030 has an estimated population of 25,133 residents, with a density of 1,045 people per square mile.

What timezone is ZIP code 21030 in?

ZIP code 21030 observes the EST timezone.