21128 ZIP Code — Perry Hall, MD

Baltimore County, Maryland

ZIP code 21128 is located in Perry Hall, Maryland, within Baltimore County. It covers approximately 6.81 square miles and serves a population of 15,934 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410.

About ZIP code 21128

The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $413,800. Owner-occupancy is high at 84%, well above the national average.

The gap between median ($122,021) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average. 31% 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 35 minutes is near the national average.

Educational attainment is high — 49% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 21128 reflects a community defined by high homeownership and a significant Social Security-dependent population.

15,934

population

6.81

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21128 ZIP code map

Cities in ZIP code 21128

Below are the cities the US Postal Service accepts for ZIP code 21128. Using any city not on this list may result in mail delivery delays.

City	Status
Perry Hall	Acceptable
Perry Hall	Preferred

Nearby ZIP codes

21162 White Marsh (2.6 mi) 21236 Nottingham (2.7 mi) 21087 Kingsville (3.1 mi) 21156 Upper Falls (3.5 mi) 21057 Glen Arm (4.2 mi) 21234 Parkville (4.7 mi) 21051 Fork (5 mi) 21082 Hydes (5.1 mi) 21220 Middle River (5.1 mi) 21237 Rosedale (5.4 mi) 21085 Joppa (5.6 mi) 21286 Towson (6.9 mi)

Demographics updated 05/2026

Population
Total population	15,934
Population density	2,340 / sq mi
State FIPS	24
County FIPS	005

Geography
Land area	6.81 sq mi
Water area	0.01 sq mi
Latitude	39.4066
Longitude	-76.4435
Timezone	Eastern (ET)
Area code	410

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	27.1%	31.4%	28.2%
$50k – $100k	20.7%	30.7%	28.2%
$100k – $200k	30.2%	28.5%	30.1%
Over $200k	22.0%	9.5%	13.4%

Demographics & statistics

15,934

Population

2,340

People per sq mi

40.0

Median age

$122,021

Median household income

$52,784

Per capita income

$413,800

Median home value

$1,680

Median monthly rent

83.9%

Home ownership

5.9%

Poverty rate

3.7%

Unemployment

5,001

Housing units

49.0%

Bachelor's or higher

Age distribution

Male Female

308

Under 5

286

500

5–9

466

789

10–14

734

531

15–19

494

418

20–24

390

1,032

25–34

960

1,093

35–44

1,018

1,066

45–54

993

656

55–59

611

487

60–64

453

769

65–74

716

370

75–84

344

233

85+

217

← Male

Female →

Age summary

Group	Count	%
Under 18	3,693	23.2%
18 and over	12,241	76.8%
65 and over	2,649	16.6%
Median age	40.0 years

Race & ethnicity

White 63.9%

Asian 13.5%

Black or African American 12.9%

Two or more races 5.4%

Hispanic or Latino 4%

Other race 0.3%

Group	Count	%
White	10,613	63.9%
Asian	2,235	13.5%
Black or African American	2,137	12.9%
Two or more races	898	5.4%
Hispanic or Latino	670	4%
Other race	51	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	27.1%	31.4%	28.2%
$50k – $100k	20.7%	30.7%	28.2%
$100k – $200k	30.2%	28.5%	30.1%
Over $200k	22.0%	9.5%	13.4%

Under $10k 2.5%

$10k–$15k 2.4%

$15k–$25k 3.9%

$25k–$35k 5.3%

$35k–$50k 5.9%

$50k–$75k 9.9%

$75k–$100k 9.7%

$100k–$150k 20.3%

$150k–$200k 12.1%

$200k+ 28.0%

Range	% of households
Under $10k	2.5%
$10k–$15k	2.4%
$15k–$25k	3.9%
$25k–$35k	5.3%
$35k–$50k	5.9%
$50k–$75k	9.9%
$75k–$100k	9.7%
$100k–$150k	20.3%
$150k–$200k	12.1%
$200k+	28.0%
Median income	$122,021

Housing

Home values

Under $50k 1.0%

$100k–$150k 0.2%

$150k–$200k 2.2%

$200k–$300k 20.4%

$300k–$500k 44.4%

$500k–$1M 31.8%

Housing overview

Metric	Value
Median home value	$413,800
Median rent / month	$1,680
Owner occupied	83.9%
Renter occupied	16.1%
Vacant	5.6%
Single-family detached	57.2%
Large apartment buildings	4.8%
Mobile homes	0.0%
Median rooms	6.9
Avg household size (owned)	3.00

Year built

Era	%
2020 or later	1.1%
2010–2019	12.2%
2000–2009	35.2%
1990–1999	14.2%
1980–1989	15.3%
1970–1979	3.6%
1960–1969	5.7%
1950–1959	7.8%
1940–1949	1.9%
1939 or earlier	3.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	7.3%
2 bedrooms	21.7%
3 bedrooms	30.7%
4 bedrooms	27.9%
5+ bedrooms	11.9%

Vehicles per household

Vehicles	% of households
No vehicle	3.6%
1 vehicle	29.4%
2 vehicles	38.8%
3 or more	28.2%

Heating fuel

Fuel type	%
Utility gas	57.0%
Electricity	36.7%
Propane / LP gas	1.3%
Fuel oil	4.2%
Wood	0.1%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	3,327	59.8%
Cohabiting couple	242	4.3%
Male householder, no spouse	646	11.6%
Female householder, no spouse	1,353	24.3%
Households with children under 18	1,756	31.5%
Households with seniors (65+)	1,855	33.3%
Average household size	2.86

Marital status

Status	Male	Female
Never married	31.8%	23.4%
Married	56.7%	54.9%
Separated	0.7%	2.0%
Widowed	3.6%	9.7%
Divorced	7.1%	10.0%

Education

Less than 9th grade 2.9%

Some HS, no diploma 2.5%

HS graduate 24.6%

Some college, no degree 16.4%

Associate's degree 4.6%

Bachelor's degree 26.3%

Graduate / professional 22.7%

Metric	%
HS diploma or higher	94.6%
Bachelor's or higher	49.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	232	5.3%
Kindergarten	174	4.0%
Elementary school	2,083	47.7%
High school	799	18.3%
College / grad school	1,077	24.7%

Employment

Industry of employment

Education & healthcare 28.7%

Professional & management 13.3%

Retail trade 12.1%

Finance & real estate 10.6%

Public administration 7.8%

Construction 6.9%

Other services 4.4%

Arts, food & hospitality 3.9%

Transportation & utilities 3.7%

Manufacturing 3.6%

Wholesale trade 2.8%

Information 2.2%

Occupation

Category	%
Management, business & arts	57.9%
Service	9.1%
Sales & office	24.2%
Natural resources & construction	3.7%
Production & transportation	5.0%

Employment type

Type	%
Private sector	75.3%
Government	17.9%
Self-employed	6.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	75.7%
Carpool	8.5%
Public transit	3.2%
Walk	0.4%
Work from home	9.4%
Other means	2.8%
Avg commute (minutes)	34.7

Poverty

All people 5.9%

Under 18 years 11.5%

18 and over 4.3%

Married-couple families 2.0%

Female-led households 17.8%

Income support

Source	% of households
Social Security	31.3%
Retirement income	29.0%
Supplemental Security	4.6%
Cash public assistance	1.8%
Food stamps / SNAP	5.4%

Health indicators

Condition	%
Obesity	27.4%
High blood pressure	30.4%
High cholesterol	32.1%
Diabetes	7.6%
Heart disease	4.9%
Stroke	2.3%
Asthma	9.0%
Arthritis	22.7%
Kidney disease	2.3%
Pulmonary disease	4.6%
Cancer	6.8%

Behavior / access	%
Smoking	12.8%
Binge drinking	15.6%
No physical activity	19.3%
Less than 7 hrs sleep	30.7%
Depression	18.3%
Fair or poor health	9.9%
Poor mental health	13.4%
Poor physical health	7.0%
No health insurance	8.6%
Visited doctor (checkup)	75.3%
Visited dentist	69.9%
Cholesterol screening	93.1%
Teeth loss	8.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	696	5.7%

Disability	%
Any disability	11.1%
Under 18	1.9%
18–64 years	9.5%
65 and over	30.2%

Health insurance coverage

Type	%
Private insurance	81.1%
Public insurance	29.3%
No insurance	3.4%
Uninsured under 19	0.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	15,340	96.3%
Spanish	968	6.3%
Other Indo-European	31	0.2%
Asian & Pacific Islander	510	3.3%
Other languages	277	1.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	13,469	84.5%
Born in same state	13,164	82.6%
Born in different state	10,846	68.1%
Foreign born	305	1.9%
Naturalized citizen	2,465	15.5%
Not a US citizen	1,852	75.1%

Ancestry

Ancestry	Count	%
Italian	2,771	17.4%
French	1,223	7.7%
Arab	923	5.8%
Norwegian	217	1.4%
Polish	150	0.9%

Ancestry	Count	%
Irish	70	0.4%
German	17	0.1%
English	14	0.1%
Dutch	8	0.1%

Technology access

Metric	% of households
Computer access	34.9%
Internet access	95.4%

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

Frequently asked questions about ZIP code 21128

What city is ZIP code 21128 in?

ZIP code 21128 is primarily assigned to Perry Hall, Maryland.

What county is ZIP code 21128 in?

ZIP code 21128 falls within Baltimore County, Maryland.

Is ZIP code 21128 mostly owner-occupied?

84% of occupied units in ZIP code 21128 are owner-occupied, well above the national average.

How educated is the population of ZIP code 21128?

49% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the typical home value in ZIP code 21128?

The median home value in ZIP code 21128 is $413,800.

What is the median household income in ZIP code 21128?

The median household income in ZIP code 21128 is $122,021, above the national median of ~$75,000.

What timezone is ZIP code 21128 in?

ZIP code 21128 observes the EST timezone.