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ZIP CODE TABULATION AREA

21784

Maryland · 39,258 residents · 56.131 sq mi
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ZIP 21784 is significantly wealthier than the US average, with a median household income of $139,395. Population has held roughly steady since 2024. 53% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value is $491,800. Poverty is rare here, at 4.4% of residents. Among the 9 ZIP codes in Carroll County, 21784 ranks 1st by median household income.

$139,395
US average: $82,259
$491,800
US average: $376,019
53.0%
US average: 35.6%
Age, sex & households
Under 18
25.3%
Age 65+
15.8%
50.0%
50.0%
2.84 people
Race & ethnicity · 2024
2024
White, non-Hispanic77%(30,218)
Black6.6%(2,604)
Hispanic / Latino6.8%(2,678)
Asian4.1%(1,626)
Other5.4%(2,132)
Diversity Score49.2%(19,325)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Carroll County
Income rank vs other ZIPs
LOWEST1ST OF 9HIGHEST
Adjacent ZIPs
21048$131,921
21074$108,536
21102$135,069
21157$104,966
Frequently asked

How many people live in ZIP code 21784?

ZIP code 21784 has about 39,258 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21784?

The typical household in ZIP code 21784 earns about $139,395 a year. Half of households make more than that, and half make less.

Is ZIP code 21784 expensive?

In ZIP code 21784, the median home is worth about $491,800, and the typical rent is about $1,739 a month.

How educated are people in ZIP code 21784?

About 53.0% of adults age 25 and over in ZIP code 21784 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21784?

About 4.4% of people in ZIP code 21784 live below the federal poverty line.

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