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ZIP CODE TABULATION AREA

21042

Maryland · 43,327 residents · 37.0 sq mi
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ZIP 21042 is a ZIP code of 43,327 people in Howard County. 73% of adults hold a bachelor's degree, against 36% nationally. Households take in $190,061 a year at the median, 131% more than the country as a whole. 85% of homes are owner-occupied. Median home value sits at $706,400. At a median age of 45.1, this is an older place than the country as a whole. Among the 20 ZIP codes in Howard County, 21042 ranks 10th by median household income.

$190,061
US average: $82,259
$77,643
US average: $44,673
$706,400
US average: $376,019
72.9%
US average: 35.6%
Land area
37.0 sq mi
Age, sex & households
Under 18
25.2%
Age 65+
19.9%
49.3%
50.7%
2.86 people
Race & ethnicity · 2024
2024
White, non-Hispanic55.7%(24,130)
Black6.2%(2,669)
Hispanic / Latino3.7%(1,607)
Asian29%(12,564)
Other5.4%(2,357)
75
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
3.7
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
LOWEST10TH 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 21042?

ZIP code 21042 has about 43,327 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21042?

The typical household in ZIP code 21042 earns about $190,061 a year. Half of households make more than that, and half make less.

Is ZIP code 21042 expensive?

In ZIP code 21042, the median home is worth about $706,400, and the typical rent is about $2,183 a month.

How educated are people in ZIP code 21042?

About 72.9% of adults age 25 and over in ZIP code 21042 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21042?

About 3.3% of people in ZIP code 21042 live below the federal poverty line.

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