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ZIP CODE TABULATION AREA

21737

Maryland · 2,474 residents · 5.12 sq mi
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ZIP 21737 is home to 2,474 people in Howard County. The median household earns $250,000+, about 204% above the national median. This is an unusually credentialed place: 76% of adults have a four-year degree. The typical home is worth $996,400. Owners hold 93% of the housing stock. Households here earn about 67% more than in Howard County as a whole. Among the 20 ZIP codes in Howard County, 21737 ranks 2nd by median household income.

$250,001
US average: $82,259
$101,402
US average: $44,673
$996,400
US average: $376,019
75.8%
US average: 35.6%
Land area
5.12 sq mi
Age, sex & households
Under 18
24.5%
Age 65+
9.4%
45.2%
54.8%
3.34 people
Race & ethnicity · 2024
2024
White, non-Hispanic60.2%(1,490)
Black11.6%(286)
Hispanic / Latino0.4%(9)
Asian16.4%(405)
Other11.5%(284)
73
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
4.0
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Howard County
Income rank vs other ZIPs
LOWEST2ND OF 20HIGHEST
Adjacent ZIPs
20701$85,594
20723$138,113
20759$250,001
20763$76,842
Frequently asked

How many people live in ZIP code 21737?

ZIP code 21737 has about 2,474 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21737?

The typical household in ZIP code 21737 earns about $250,001 a year. Half of households make more than that, and half make less.

Is ZIP code 21737 expensive?

In ZIP code 21737, the median home is worth about $996,400.

How educated are people in ZIP code 21737?

About 75.8% of adults age 25 and over in ZIP code 21737 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21737?

About 0.2% of people in ZIP code 21737 live below the federal poverty line.

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