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ZIP CODE TABULATION AREA

21128

Maryland · 15,501 residents · 6.81 sq mi
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With 15,501 people, ZIP 21128 is a ZIP code in Baltimore County. This is an unusually credentialed place: 55% of adults have a four-year degree. Owners hold 84% of the housing stock. That is roughly 40% ahead of the Baltimore County median. Median household income runs $128,069, well clear of the $82,259 US median. The poverty rate is 3.1%, under the national 12.5%. Among the 38 ZIP codes in Baltimore County, 21128 ranks 13th by median household income.

$128,069
US average: $82,259
$54,499
US average: $44,673
$449,500
US average: $376,019
54.8%
US average: 35.6%
Land area
6.81 sq mi
Age, sex & households
Under 18
21.7%
Age 65+
17.5%
50.6%
49.4%
2.75 people
Race & ethnicity · 2024
2024
White, non-Hispanic62.3%(9,650)
Black10.8%(1,680)
Hispanic / Latino7%(1,082)
Asian16.1%(2,490)
Other3.9%(599)
71
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
3.5
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Baltimore County
Income rank vs other ZIPs
LOWEST13TH OF 38HIGHEST
Adjacent ZIPs
21013$171,354
21023$84,474
21030$89,015
Frequently asked

How many people live in ZIP code 21128?

ZIP code 21128 has about 15,501 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21128?

The typical household in ZIP code 21128 earns about $128,069 a year. Half of households make more than that, and half make less.

Is ZIP code 21128 expensive?

In ZIP code 21128, the median home is worth about $449,500, and the typical rent is about $1,935 a month.

How educated are people in ZIP code 21128?

About 54.8% of adults age 25 and over in ZIP code 21128 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21128?

About 3.1% of people in ZIP code 21128 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024