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ZIP CODE TABULATION AREA

21666

Maryland · 14,394 residents · 21.847 sq mi
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ZIP 21666 is significantly wealthier than the US average, with a median household income of $123,645. Population has held roughly steady since 2024. Median home value is $494,300. With a median age of 46.0, the population is older than the US median of 38.9. Poverty is rare here, at 3.9% of residents. Among the 11 ZIP codes in Queen Anne's County, 21666 ranks 3rd by median household income.

$123,645
US average: $82,259
$494,300
US average: $376,019
40.9%
US average: 35.6%
Age, sex & households
Under 18
20.1%
Age 65+
22.5%
50.2%
49.8%
2.59 people
Race & ethnicity · 2024
2024
White, non-Hispanic87.1%(12,530)
Black3.7%(526)
Hispanic / Latino0.7%(105)
Asian1.4%(207)
Other7.1%(1,026)
Diversity Score29.4%(4,238)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Queen Anne's County
Income rank vs other ZIPs
LOWEST3RD OF 11HIGHEST
Adjacent ZIPs
21607$91,250
21617$116,898
21619$107,639
21623$78,345
Frequently asked

How many people live in ZIP code 21666?

ZIP code 21666 has about 14,394 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 21666?

The typical household in ZIP code 21666 earns about $123,645 a year. Half of households make more than that, and half make less.

Is ZIP code 21666 expensive?

In ZIP code 21666, the median home is worth about $494,300, and the typical rent is about $1,764 a month.

How educated are people in ZIP code 21666?

About 40.9% of adults age 25 and over in ZIP code 21666 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 21666?

About 3.9% of people in ZIP code 21666 live below the federal poverty line.

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