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ZIP CODE TABULATION AREA

21104

Maryland · 6,052 residents · 17.052 sq mi
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ZIP 21104 is significantly wealthier than the US average, with a median household income of $191,804. Population has held roughly steady since 2024. 64% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value is $680,200. Poverty is rare here, at 2.7% of residents. Households here earn about 28% more than the Howard County median. Among the 20 ZIP codes in Howard County, 21104 ranks 9th by median household income.

$191,804
US average: $82,259
$680,200
US average: $376,019
64.4%
US average: 35.6%
Age, sex & households
Under 18
20.7%
Age 65+
18.1%
50.0%
50.0%
2.88 people
Race & ethnicity · 2024
2024
White, non-Hispanic75.2%(4,554)
Black5.9%(360)
Hispanic / Latino1%(61)
Asian11.1%(672)
Other6.7%(405)
Diversity Score51.7%(3,127)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Howard County
Income rank vs other ZIPs
LOWEST9TH 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 21104?

ZIP code 21104 has about 6,052 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21104?

The typical household in ZIP code 21104 earns about $191,804 a year. Half of households make more than that, and half make less.

Is ZIP code 21104 expensive?

In ZIP code 21104, the median home is worth about $680,200, and the typical rent is about $1,384 a month.

How educated are people in ZIP code 21104?

About 64.4% of adults age 25 and over in ZIP code 21104 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21104?

About 2.7% of people in ZIP code 21104 live below the federal poverty line.

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