21228 ZIP Code — Catonsville, MD
Baltimore County, Maryland
ZIP code 21228 is located in Catonsville, Maryland, within Baltimore County. It covers approximately 15.58 square miles and serves a population of 50,268 residents. This is a po box ZIP code in the Eastern (ET) timezone, served by area code 410/443.
About ZIP code 21228
The housing stock consists of a mix of housing types. Most homes were built in the 1950s, giving the area an established character. Median home value is $363,800. Owner-occupancy sits near the national average at 73%.
Median household income is $102,592. 34% 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 27 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%.
50,268
population
15.58
sq mi land
PO Box
ZIP type
Eastern (ET)
timezone
21228 ZIP code map
Cities in ZIP code 21228
Below are the cities the US Postal Service accepts for ZIP code 21228. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Catonsville | Acceptable |
| Catonsville | Preferred |
Nearby ZIP codes
21250 Baltimore (2.2 mi)
21043 Ellicott City (2.6 mi)
21229 Baltimore (2.9 mi)
21235 Baltimore (3.1 mi)
21207 Gwynn Oak (4.3 mi)
21227 Halethorpe (4.3 mi)
21216 Baltimore (4.8 mi)
21244 Windsor Mill (5 mi)
21223 Baltimore (5.1 mi)
21090 Linthicum Heights (5.9 mi)
21045 Columbia (6 mi)
21215 Baltimore (6.1 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 50,268 |
| Population density | 3,226 / sq mi |
| State FIPS | 24 |
| County FIPS | 005 |
| Geography | |
|---|---|
| Land area | 15.58 sq mi |
| Water area | 0.04 sq mi |
| Latitude | 39.2675 |
| Longitude | -76.7446 |
| 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 | 26.5% | 31.4% | 28.2% |
| $50k – $100k | 29.4% | 30.7% | 28.2% |
| $100k – $200k | 32.8% | 28.5% | 30.1% |
| Over $200k | 11.2% | 9.5% | 13.4% |
Demographics & statistics
50,268
Population
3,226
People per sq mi
42.7
Median age
$102,592
Median household income
$48,725
Per capita income
$363,800
Median home value
$1,595
Median monthly rent
73.1%
Home ownership
7.9%
Poverty rate
4.5%
Unemployment
15,128
Housing units
48.7%
Bachelor's or higher
Age distribution
Male
Female
1,317
Under 5
1,444
1,301
5–9
1,427
1,355
10–14
1,485
1,453
15–19
1,593
1,496
20–24
1,640
2,616
25–34
2,869
3,129
35–44
3,431
2,409
45–54
2,641
1,575
55–59
1,728
1,968
60–64
2,157
2,568
65–74
2,815
1,587
75–84
1,740
1,204
85+
1,320
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 10,326 | 20.5% |
| 18 and over | 39,942 | 79.5% |
| 65 and over | 11,234 | 22.3% |
| Median age | 42.7 years | |
Race & ethnicity
White
55.5%
Black or African American
19.3%
Asian
12.7%
Two or more races
5.6%
Hispanic or Latino
4%
Other race
2.5%
Native Hawaiian / Pacific Islander
0.2%
American Indian / Alaska Native
0.2%
| Group | Count | % |
|---|---|---|
| White | 29,050 | 55.5% |
| Black or African American | 10,116 | 19.3% |
| Asian | 6,639 | 12.7% |
| Two or more races | 2,909 | 5.6% |
| Hispanic or Latino | 2,120 | 4% |
| Other race | 1,335 | 2.5% |
| Native Hawaiian / Pacific Islander | 110 | 0.2% |
| American Indian / Alaska Native | 109 | 0.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 26.5% | 31.4% | 28.2% |
| $50k – $100k | 29.4% | 30.7% | 28.2% |
| $100k – $200k | 32.8% | 28.5% | 30.1% |
| Over $200k | 11.2% | 9.5% | 13.4% |
Under $10k
3.0%
$10k–$15k
1.9%
$15k–$25k
4.9%
$25k–$35k
4.7%
$35k–$50k
8.2%
$50k–$75k
14.2%
$75k–$100k
11.9%
$100k–$150k
22.3%
$150k–$200k
13.4%
$200k+
15.4%
| Range | % of households |
|---|---|
| Under $10k | 3.0% |
| $10k–$15k | 1.9% |
| $15k–$25k | 4.9% |
| $25k–$35k | 4.7% |
| $35k–$50k | 8.2% |
| $50k–$75k | 14.2% |
| $75k–$100k | 11.9% |
| $100k–$150k | 22.3% |
| $150k–$200k | 13.4% |
| $200k+ | 15.4% |
| Median income | $102,592 |
Housing
Home values
Under $50k
1.4%
$50k–$100k
0.6%
$100k–$150k
1.5%
$150k–$200k
3.9%
$200k–$300k
25.0%
$300k–$500k
46.6%
$500k–$1M
20.4%
$1M+
0.6%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $363,800 |
| Median rent / month | $1,595 |
| Owner occupied | 73.1% |
| Renter occupied | 26.9% |
| Vacant | 3.9% |
| Single-family detached | 54.6% |
| Large apartment buildings | 11.3% |
| Mobile homes | 0.1% |
| Median rooms | 6.7 |
| Avg household size (owned) | 2.66 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.2% |
| 2010–2019 | 5.0% |
| 2000–2009 | 4.5% |
| 1990–1999 | 9.8% |
| 1980–1989 | 18.3% |
| 1970–1979 | 10.5% |
| 1960–1969 | 11.5% |
| 1950–1959 | 21.9% |
| 1940–1949 | 4.1% |
| 1939 or earlier | 14.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.8% |
| 1 bedroom | 13.6% |
| 2 bedrooms | 17.0% |
| 3 bedrooms | 38.3% |
| 4 bedrooms | 22.8% |
| 5+ bedrooms | 6.6% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 9.3% |
| 1 vehicle | 35.5% |
| 2 vehicles | 37.0% |
| 3 or more | 18.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 54.8% |
| Electricity | 38.1% |
| Propane / LP gas | 1.0% |
| Fuel oil | 4.6% |
| Wood | 0.6% |
| Solar | 0.2% |
| No fuel used | 0.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 9,100 | 46.4% |
| Cohabiting couple | 959 | 4.9% |
| Male householder, no spouse | 3,395 | 17.3% |
| Female householder, no spouse | 6,156 | 31.4% |
| Households with children under 18 | 5,418 | 27.6% |
| Households with seniors (65+) | 7,758 | 39.6% |
| Average household size | 2.48 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 38.6% | 28.9% |
| Married | 50.1% | 44.3% |
| Separated | 0.8% | 1.1% |
| Widowed | 3.7% | 13.6% |
| Divorced | 6.8% | 12.1% |
Education
Less than 9th grade
3.8%
Some HS, no diploma
4.1%
HS graduate
19.8%
Some college, no degree
16.1%
Associate's degree
7.4%
Bachelor's degree
25.9%
Graduate / professional
22.8%
| Metric | % |
|---|---|
| HS diploma or higher | 92.1% |
| Bachelor's or higher | 48.7% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 904 | 7.2% |
| Kindergarten | 399 | 3.2% |
| Elementary school | 4,558 | 36.2% |
| High school | 2,657 | 21.1% |
| College / grad school | 4,071 | 32.3% |
Employment
Industry of employment
Education & healthcare
26.5%
Professional & management
16.9%
Arts, food & hospitality
9.4%
Public administration
9.4%
Retail trade
7.9%
Finance & real estate
6.6%
Other services
6.4%
Manufacturing
5.3%
Transportation & utilities
4.2%
Construction
3.9%
Wholesale trade
2.0%
Information
1.3%
Agriculture & mining
0.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 54.3% |
| Service | 16.2% |
| Sales & office | 17.5% |
| Natural resources & construction | 4.0% |
| Production & transportation | 7.9% |
Employment type
| Type | % |
|---|---|
| Private sector | 74.0% |
| Government | 22.0% |
| Self-employed | 4.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 73.0% |
| Carpool | 5.5% |
| Public transit | 2.7% |
| Walk | 1.4% |
| Work from home | 16.5% |
| Other means | 0.9% |
| Avg commute (minutes) | 26.5 |
Poverty
All people
7.9%
Under 18 years
9.5%
18 and over
7.5%
Married-couple families
3.8%
Female-led households
8.8%
Income support
| Source | % of households |
|---|---|
| Social Security | 34.4% |
| Retirement income | 31.3% |
| Supplemental Security | 3.6% |
| Cash public assistance | 1.0% |
| Food stamps / SNAP | 7.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 29.1% |
| High blood pressure | 36.1% |
| High cholesterol | 34.1% |
| Diabetes | 9.9% |
| Heart disease | 6.3% |
| Stroke | 3.2% |
| Asthma | 9.4% |
| Arthritis | 26.5% |
| Kidney disease | 3.1% |
| Pulmonary disease | 5.5% |
| Cancer | 8.0% |
| Behavior / access | % |
|---|---|
| Smoking | 12.1% |
| Binge drinking | 13.8% |
| No physical activity | 21.9% |
| Less than 7 hrs sleep | 31.1% |
| Depression | 17.2% |
| Fair or poor health | 12.5% |
| Poor mental health | 12.9% |
| Poor physical health | 8.2% |
| No health insurance | 9.2% |
| Visited doctor (checkup) | 78.2% |
| Visited dentist | 67.6% |
| Cholesterol screening | 93.5% |
| Teeth loss | 10.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,800 | 7.0% |
| Disability | % |
|---|---|
| Any disability | 14.3% |
| Under 18 | 4.5% |
| 18–64 years | 10.8% |
| 65 and over | 33.4% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 77.3% |
| Public insurance | 35.4% |
| No insurance | 4.4% |
| Uninsured under 19 | 5.8% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 47,507 | 94.5% |
| Spanish | 3,268 | 6.9% |
| Other Indo-European | 731 | 1.5% |
| Asian & Pacific Islander | 1,318 | 2.8% |
| Other languages | 1,036 | 2.2% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 42,658 | 84.9% |
| Born in same state | 41,571 | 82.7% |
| Born in different state | 28,642 | 57.0% |
| Foreign born | 1,087 | 2.2% |
| Naturalized citizen | 7,610 | 15.1% |
| Not a US citizen | 4,667 | 61.3% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 6,892 | 13.7% |
| French | 4,934 | 9.8% |
| Arab | 1,429 | 2.8% |
| Norwegian | 464 | 0.9% |
| English | 353 | 0.7% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 314 | 0.6% |
| German | 137 | 0.3% |
| Dutch | 51 | 0.1% |
| Irish | 26 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 39.0% |
| Internet access | 93.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 21228
What part of Catonsville is ZIP code 21228?
ZIP code 21228 covers a portion of Catonsville, Maryland, within Baltimore County.
What county is ZIP code 21228 in?
ZIP code 21228 falls within Baltimore County, Maryland.
How educated is the population of ZIP code 21228?
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 21228?
The median home value in ZIP code 21228 is $363,800.
What is the median household income in ZIP code 21228?
The median household income in ZIP code 21228 is $102,592, above the national median of ~$75,000.
What is the population of ZIP code 21228?
ZIP code 21228 has an estimated population of 50,268 residents, with a density of 3,227 people per square mile.
What timezone is ZIP code 21228 in?
ZIP code 21228 observes the EST timezone.