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ZIP CODE TABULATION AREA

21131

Maryland · 7,141 residents · 21.0 sq mi
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With 7,141 people, ZIP 21131 is a ZIP code in Baltimore County. Households here earn about 115% more than in Baltimore County as a whole. This is an unusually credentialed place: 74% of adults have a four-year degree. Owners hold 98% of the housing stock. Median household income runs $197,619, well clear of the $82,259 US median. The median age is 49.4, about 10 years above the US median. Among the 38 ZIP codes in Baltimore County, 21131 ranks 4th by median household income.

$197,619
US average: $82,259
$82,991
US average: $44,673
$686,000
US average: $376,019
73.9%
US average: 35.6%
Land area
21.0 sq mi
Age, sex & households
Under 18
21.7%
Age 65+
22.2%
52.6%
47.4%
2.75 people
Race & ethnicity · 2024
2024
White, non-Hispanic92.8%(6,625)
Black0.7%(50)
Hispanic / Latino1.5%(110)
Asian1.3%(94)
Other3.7%(262)
17
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
LOWEST4TH OF 38HIGHEST
Adjacent ZIPs
21013$171,354
21023$84,474
21030$89,015
Frequently asked

How many people live in ZIP code 21131?

ZIP code 21131 has about 7,141 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21131?

The typical household in ZIP code 21131 earns about $197,619 a year. Half of households make more than that, and half make less.

Is ZIP code 21131 expensive?

In ZIP code 21131, the median home is worth about $686,000.

How educated are people in ZIP code 21131?

About 73.9% of adults age 25 and over in ZIP code 21131 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21131?

About 4.7% of people in ZIP code 21131 live below the federal poverty line.

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