ZIP Code 20621

ZIP Code Tabulation Area in St. Mary's County, Maryland.

Population: 902
Median home value: $562,500

ZIP Code 20621 (St. Mary's County, Maryland) is home to about 902 residents. Its median home value of $562,500 runs above the St. Mary's County figure of $390,900.

From 2019 to 2023, ZIP Code 20621's population declined 6.0% from 960 to 902.

8.5% of adults 25 and older hold a bachelor's degree or higher. Owners occupy 97.5% of the area's occupied homes.

Demographics

ACS 2019–2023

Population: 902
Median age: 60.2 yrs
Median household income: —
Median home value: $562,500
Median gross rent: —
Housing units: 636
Homeownership rate: 97.5%
Bachelor's degree or higher: 8.5%
Unemployment rate: 4.3%

Trends

ACS 5-year · 2019–2023

Population

960902

Median household income

$70,278$47,978

Median home value

$443,200$562,500

Year	Population	Median household income	Median home value
2019	960	$70,278	$443,200
2020	1,277	$47,978	$415,600
2021	786	—	$444,800
2022	775	—	$440,600
2023	902	—	$562,500

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 50.0%

5 to 177.4%

18 to 248.0%

25 to 342.2%

35 to 447.9%

45 to 5417.8%

55 to 6432.5%

65 to 7410.8%

75 and over13.4%

	Count	Share
Under 5	0	0.0%
5 to 17	67	7.4%
18 to 24	72	8.0%
25 to 34	20	2.2%
35 to 44	71	7.9%
45 to 54	161	17.8%
55 to 64	293	32.5%
65 to 74	97	10.8%
75 and over	121	13.4%

Race & ethnicity

	Count	Share
White (non-Hispanic)	834	92.5%
Black or African American	68	7.5%
American Indian & Alaska Native	0	0.0%
Asian	0	0.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	0	0.0%
Hispanic or Latino (any race)	0	0.0%

Educational attainment (age 25+)

No high school diploma6.4%

High school graduate62.3%

Some college or associate's22.8%

Bachelor's degree3.8%

Graduate or professional degree4.7%

	Count	Share
No high school diploma	49	6.4%
High school graduate	475	62.3%
Some college or associate's	174	22.8%
Bachelor's degree	29	3.8%
Graduate or professional degree	36	4.7%

Commute to work

Mean travel time to work: 59 min

Drove alone89.9%

Carpooled2.1%

Public transit0.0%

Walked0.0%

Bicycle0.0%

Worked from home8.1%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	390	89.9%
Carpooled	9	2.1%
Public transit	0	0.0%
Walked	0	0.0%
Bicycle	0	0.0%
Worked from home	35	8.1%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	0	0.0%
15 to 29 min	118	29.6%
30 to 44 min	50	12.5%
45 to 59 min	102	25.6%
60+ min	129	32.3%

Households

Average household size: 2.06
Poverty rate: 12.2% (110 of 902)

	Count	Share
Family households	198	45.3%
Nonfamily households	239	54.7%

Housing

Median year structure built: 1978

Occupancy

	Count	Share
Occupied	437	68.7%
Vacant	199	31.3%

Tenure (of occupied units)

	Count	Share
Owner-occupied	426	97.5%
Renter-occupied	11	2.5%

1-unit, detached100.0%

1-unit, attached0.0%

2 to 4 units0.0%

5 to 19 units0.0%

20 or more units0.0%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	636	100.0%
1-unit, attached	0	0.0%
2 to 4 units	0	0.0%
5 to 19 units	0	0.0%
20 or more units	0	0.0%
Mobile home & other	0	0.0%

ZIP Code 20621

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes