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ZIP CODE TABULATION AREA

20628

Maryland · 503 residents · 6.49 sq mi
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ZIP 20628 is a ZIP code of 503 people in St. Mary's County. 52% of adults hold a bachelor's degree, against 36% nationally. 83% of homes are owner-occupied. Median home value sits at $545,800. The foreign-born share is 5%. The poverty rate is 4.6%, under the national 12.5%.

Population
503
Per capita income
$60,310
US average: $44,673
Median home value
$545,800
US average: $376,019
Bachelor's+
52.5%
US average: 35.6%
Land area
6.49 sq mi
Age, sex & households
Median age
35.9
Under 18
23.5%
Age 65+
30.4%
Male
50.3%
Female
49.7%
Avg household
2.53 people
Race & ethnicity · 2024
2024
White, non-Hispanic76.1%(383)
Black0%(0)
Hispanic / Latino22.1%(111)
Asian0%(0)
Other1.8%(9)
Diversity Score
46
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Within St. Mary's County
Income rank vs other ZIPs
LOWESTHIGHEST
Adjacent ZIPs
20606$88,262
20609$118,102
20618$105,508
20619$119,432
Frequently asked

How many people live in ZIP code 20628?

ZIP code 20628 has about 503 residents according to the 2024 American Community Survey.

Is ZIP code 20628 expensive?

In ZIP code 20628, the median home is worth about $545,800.

How educated are people in ZIP code 20628?

About 52.5% of adults age 25 and over in ZIP code 20628 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 20628?

About 4.6% of people in ZIP code 20628 live below the federal poverty line.

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Containing area
St. Mary's County

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