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ZIP CODE TABULATION AREA

20634

Maryland · 7,088 residents · 6.99 sq mi
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ZIP 20634 is home to 7,088 people in St. Mary's County. The median age is 32.0, younger than the US median of 38.9. Median household income runs $139,375, well clear of the $82,259 US median. The poverty rate is 4.7%, under the national 12.5%. 7% of people in this ZIP code were born outside the United States. People stay put here: 81% were in the same home a year ago. Among the 17 ZIP codes in St. Mary's County, 20634 ranks 8th by median household income.

$139,375
US average: $82,259
$61,800
US average: $44,673
$342,300
US average: $376,019
40.3%
US average: 35.6%
Land area
6.99 sq mi
Age, sex & households
Under 18
24.7%
Age 65+
8.4%
49.3%
50.7%
2.62 people
Race & ethnicity · 2024
2024
White, non-Hispanic55.2%(3,910)
Black27.8%(1,972)
Hispanic / Latino8.5%(600)
Asian2.8%(200)
Other5.7%(406)
76
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
2.5
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within St. Mary's County
Income rank vs other ZIPs
LOWEST8TH OF 17HIGHEST
Adjacent ZIPs
20606$88,262
20609$118,102
20618$105,508
20619$119,432
Frequently asked

How many people live in ZIP code 20634?

ZIP code 20634 has about 7,088 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 20634?

The typical household in ZIP code 20634 earns about $139,375 a year. Half of households make more than that, and half make less.

Is ZIP code 20634 expensive?

In ZIP code 20634, the median home is worth about $342,300, and the typical rent is about $1,814 a month.

How educated are people in ZIP code 20634?

About 40.3% of adults age 25 and over in ZIP code 20634 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 20634?

About 4.7% of people in ZIP code 20634 live below the federal poverty line.

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