Zip Code 21228
Catonsville, Maryland — Baltimore County
📍 ZIP code 21228 is in Catonsville, Baltimore County, Maryland.
ZIP code 21228 is located in Catonsville, Baltimore County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 49,417. The area code for ZIP code 21228 is 410.
Quick Answer
Zip code 21228 is in Catonsville, Maryland (Baltimore County). It has a population of 49,417, median household income of $107,714, and median home value of $389,200.
Population
49,417
Income
$107,714
Home Value
$389,200
Climate
90°F / 30°F
About Zip Code 21228
Zip code 21228 is located in Catonsville, Maryland, within Baltimore County. Home to approximately 49,417 residents, this area sits at an elevation of 472 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 410.
The median household income is $107,714 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $389,200, and the cost of living index is 133 (33% above the national average of 100).
Summers average a high of 90°F while winters drop to 30°F. The area receives about 44 in of rain and 9 in of snow annually. The zip code covers 15.5 square miles of land area.
Key Statistics
49,417
$107,714
$389,200
Eastern (EST/EDT)
410
472 ft
15.5 sq mi
43.1
20,357
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Compare With Nearby Zip Codes
| Metric | 21228 | 21229 | 21043 | 21207 | 21227 | 21244 |
|---|---|---|---|---|---|---|
| City | Catonsville, MD | Baltimore, MD | Ellicott City, MD | Gwynn Oak, MD | Halethorpe, MD | Windsor Mill, MD |
| Population | 49,417 | 44,687 | 47,134 | 49,599 | 35,695 | 39,545 |
| Median Income | $107,714 | $55,457 | $141,846 | $64,284 | $83,620 | $84,849 |
| Home Value | $389,200 | $184,900 | $607,300 | $248,400 | $272,400 | $271,200 |
| Cost of Living | 133 | 64 | 202 | 83 | 98 | 98 |
| Median Age | 43.1 | 38 | 39.4 | 38.5 | 36.1 | 35.3 |
Cost of Living
100 = National Average. Catonsville's cost of living is 33% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.6x
Demographics
Zip code 21228 has a population of 49,417 people with a median age of 43.1. There are 20,357 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Catonsville (21228) population trend from 2010 to 2024
↑ 48.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
90°F
30°F
44 in
9 in
Catonsville experiences hot summers with average highs around 90°F. Winters are cool with lows averaging 30°F. The area receives about 9 in of snow per year.
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Housing & Economy
Median Home Value
$389,200
Median Household Income
$107,714
With 20,357 housing units across 15.5 square miles, 21228 has a housing density of 1,313 units per square mile. The home price-to-income ratio is 3.6x.
Location & Geography
Latitude
39.2729°
Longitude
-76.7477°
Land Area
15.5 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 21228 (Catonsville, MD) with distances:
Related Cities in Maryland
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 21228's $107,714. A way to compare Catonsville to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 21228 (Catonsville, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Catonsville, Maryland?
Catonsville, Maryland uses zip code 21228.
What county is zip code 21228 in?
Zip code 21228 is located in Baltimore County, Maryland.
What is the population of zip code 21228?
The population of zip code 21228 is 49,417 with a median age of 43.1.
Is 21228 in Catonsville, Maryland?
Yes, zip code 21228 is in Catonsville, Baltimore County, Maryland. The area code is 410.
Frequently Asked Questions
What city is zip code 21228 in?
Zip code 21228 is in Catonsville, Maryland. It is part of Baltimore County and uses the Eastern (EST/EDT) timezone.
What is zip code 21228?
Zip code 21228 is a U.S. postal code in Catonsville, Maryland (Baltimore County). It has a population of 49,417 and covers 15.5 square miles.
What is the population of zip code 21228?
The population of zip code 21228 (Catonsville, MD) is 49,417 with a median age of 43.1. There are approximately 20,357 housing units in this area.
What is the median income in zip code 21228?
The median household income in zip code 21228 (Catonsville, MD) is $107,714 per year. The cost of living index is 133 (100 = national average).
What is the average home price in zip code 21228?
The median home value in zip code 21228 (Catonsville, MD) is $389,200. The cost of living index is 133 compared to the national average of 100.
What county is zip code 21228 in?
Zip code 21228 is located in Baltimore County, Maryland. The primary city is Catonsville.
What is the area code for zip code 21228?
Zip code 21228 in Catonsville, MD uses area code 410. It is located in the Eastern (EST/EDT) timezone.
Is zip code 21228 a good place to live?
Zip code 21228 (Catonsville, MD) has a cost of living index of 133 (100 = national average), a median household income of $107,714, and median home values of $389,200. The median age is 43.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 21228?
The cost of living index for zip code 21228 (Catonsville, MD) is 133, where 100 represents the national average. This area is above the national average. Median home value: $389,200.
What schools serve zip code 21228?
Zip code 21228 in Catonsville, Maryland is served by the local school district of Baltimore County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.