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ZIP CODE TABULATION AREA

20851

Maryland · 14,946 residents · 2.54 sq mi
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With 14,946 people, ZIP 20851 is a ZIP code in Montgomery County. 38% of residents were born outside the United States. Density works out to 5,894 people per square mile. The median household earns $126,411, about 54% above the national median. About 46% of adults have finished a four-year degree. The typical home is worth $568,900. Among the 44 ZIP codes in Montgomery County, 20851 ranks 30th by median household income.

$126,411
US average: $82,259
$51,567
US average: $44,673
$568,900
US average: $376,019
46.2%
US average: 35.6%
Land area
2.54 sq mi
Age, sex & households
Under 18
20.0%
Age 65+
13.1%
50.5%
49.5%
2.89 people
Race & ethnicity · 2024
2024
White, non-Hispanic28.5%(4,265)
Black10.9%(1,629)
Hispanic / Latino44.1%(6,591)
Asian12.1%(1,814)
Other4.3%(647)
87
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
4.5
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Montgomery County
Income rank vs other ZIPs
LOWEST30TH OF 44HIGHEST
Adjacent ZIPs
20812$213,750
20814$150,996
20815$194,971
20816$232,656
Frequently asked

How many people live in ZIP code 20851?

ZIP code 20851 has about 14,946 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 20851?

The typical household in ZIP code 20851 earns about $126,411 a year. Half of households make more than that, and half make less.

Is ZIP code 20851 expensive?

In ZIP code 20851, the median home is worth about $568,900, and the typical rent is about $2,043 a month.

How educated are people in ZIP code 20851?

About 46.2% of adults age 25 and over in ZIP code 20851 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 20851?

About 9.1% of people in ZIP code 20851 live below the federal poverty line.

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