20628 ZIP Code — Dameron, MD

Saint Marys County, Maryland

ZIP code 20628 is located in Dameron, Maryland, within Saint Marys County. It covers approximately 6.49 square miles and serves a population of 631 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 240/301.

About ZIP code 20628

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $432,400. Owner-occupancy is high at 93%, well above the national average.

Median household income is $111,550. The poverty rate of 3% is below the national average. 69% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with public administration as the leading industry. The average commute of 19 minutes is near the national average.

Educational attainment is near the national average, with 43% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 22% of civilians, above the national average of 7%.

Overall, ZIP code 20628 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

631

population

6.49

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20628 ZIP code map

Cities in ZIP code 20628

Below are the cities the US Postal Service accepts for ZIP code 20628. Using any city not on this list may result in mail delivery delays.

City	Status
Dameron	Preferred

Nearby ZIP codes

20680 Ridge (2.1 mi) 20684 Saint Inigoes (3.3 mi) 20687 Scotland (5 mi) 20667 Park Hall (6.9 mi) 20630 Drayden (6.9 mi) 20653 Lexington Park (7.8 mi) 20692 Valley Lee (8.9 mi) 20690 Tall Timbers (9.7 mi) 20670 Patuxent River (10.2 mi) 20634 Great Mills (10.2 mi) 20674 Piney Point (10.9 mi) 20620 Callaway (11 mi)

Demographics updated 05/2026

Population
Total population	631
Population density	97 / sq mi
State FIPS	24
County FIPS	037

Geography
Land area	6.49 sq mi
Water area	6.02 sq mi
Latitude	38.1490
Longitude	-76.3492
Timezone	Eastern (ET)
Area code	240/301

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	27.8%	24.3%	28.2%
$50k – $100k	1.3%	27.4%	28.2%
$100k – $200k	63.3%	36.2%	30.1%
Over $200k	7.6%	12.1%	13.4%

Demographics & statistics

631

Population

People per sq mi

60.4

Median age

$111,550

Median household income

$54,672

Per capita income

$432,400

Median home value

Median monthly rent

92.8%

Home ownership

2.7%

Poverty rate

4.9%

Unemployment

323

Housing units

43.2%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

105

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	95	15.1%
18 and over	536	84.9%
65 and over	156	24.7%
Median age	60.4 years

Race & ethnicity

White 58%

Black or African American 21.8%

Two or more races 15.8%

Hispanic or Latino 4.4%

Group	Count	%
White	383	58%
Black or African American	144	21.8%
Two or more races	104	15.8%
Hispanic or Latino	29	4.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	27.8%	24.3%	28.2%
$50k – $100k	1.3%	27.4%	28.2%
$100k – $200k	63.3%	36.2%	30.1%
Over $200k	7.6%	12.1%	13.4%

$10k–$15k 1.4%

$35k–$50k 5.4%

$50k–$75k 25.2%

$75k–$100k 5.8%

$100k–$150k 19.1%

$150k–$200k 22.3%

$200k+ 20.9%

Range	% of households
$10k–$15k	1.4%
$35k–$50k	5.4%
$50k–$75k	25.2%
$75k–$100k	5.8%
$100k–$150k	19.1%
$150k–$200k	22.3%
$200k+	20.9%
Median income	$111,550

Housing

Home values

$100k–$150k 27.1%

$200k–$300k 1.2%

$300k–$500k 41.1%

$500k–$1M 30.6%

Housing overview

Metric	Value
Median home value	$432,400
Median rent / month	$0
Owner occupied	92.8%
Renter occupied	7.2%
Vacant	19.0%
Single-family detached	98.8%
Large apartment buildings	0.0%
Mobile homes	1.2%
Median rooms	6.0
Avg household size (owned)	2.32

Year built

Era	%
2020 or later	0.0%
2010–2019	5.8%
2000–2009	18.1%
1990–1999	0.0%
1980–1989	0.0%
1970–1979	13.4%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	12.0%
1939 or earlier	50.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.7%
2 bedrooms	21.6%
3 bedrooms	72.9%
4 bedrooms	0.9%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	5.8%
2 vehicles	30.6%
3 or more	62.2%

Heating fuel

Fuel type	%
Electricity	29.1%
Propane / LP gas	1.4%
Fuel oil	69.4%

Households & families

Household type	Count	%
Married-couple family	186	66.9%
Cohabiting couple	70	25.2%
Male householder, no spouse	7	2.5%
Female householder, no spouse	15	5.4%
Households with children under 18	47	16.9%
Households with seniors (65+)	119	42.8%
Average household size	2.27

Marital status

Status	Male	Female
Never married	30.1%	6.5%
Married	52.9%	85.9%
Separated	0.0%	0.0%
Widowed	0.0%	7.5%
Divorced	17.0%	0.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 14.1%

HS graduate 22.2%

Some college, no degree 20.5%

Associate's degree 0.0%

Bachelor's degree 23.1%

Graduate / professional 20.1%

Metric	%
HS diploma or higher	85.9%
Bachelor's or higher	43.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	10.1%
Kindergarten	0	0.0%
Elementary school	48	40.3%
High school	22	18.5%
College / grad school	37	31.1%

Employment

Industry of employment

Public administration 32.1%

Professional & management 26.6%

Education & healthcare 26.3%

Retail trade 7.1%

Arts, food & hospitality 7.1%

Transportation & utilities 1.0%

Occupation

Category	%
Management, business & arts	33.3%
Service	28.5%
Sales & office	23.7%
Natural resources & construction	1.0%
Production & transportation	13.5%

Employment type

Type	%
Private sector	41.7%
Government	58.3%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	100.0%
Carpool	0.0%
Public transit	0.0%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	19.1

Poverty

All people 2.7%

Under 18 years 0.0%

18 and over 3.2%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	69.4%
Retirement income	66.5%
Supplemental Security	8.6%
Cash public assistance	0.0%
Food stamps / SNAP	8.6%

Health indicators

Condition	%
Obesity	36.8%
High blood pressure	35.6%
High cholesterol	36.1%
Diabetes	10.1%
Heart disease	5.9%
Stroke	2.7%
Asthma	9.7%
Arthritis	26.7%
Kidney disease	2.6%
Pulmonary disease	5.9%
Cancer	6.9%

Behavior / access	%
Smoking	16.0%
Binge drinking	15.8%
No physical activity	20.9%
Less than 7 hrs sleep	35.2%
Depression	17.1%
Fair or poor health	11.2%
Poor mental health	13.4%
Poor physical health	8.4%
No health insurance	9.0%
Visited doctor (checkup)	76.9%
Visited dentist	70.4%
Cholesterol screening	92.6%
Teeth loss	10.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	120	22.4%

Disability	%
Any disability	13.2%
Under 18	0.0%
18–64 years	8.7%
65 and over	32.1%

Health insurance coverage

Type	%
Private insurance	99.4%
Public insurance	28.8%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	618	97.9%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	564	89.4%
Born in same state	535	84.8%
Born in different state	344	54.5%
Foreign born	29	4.6%
Naturalized citizen	67	10.6%
Not a US citizen	67	100.0%

Ancestry

Ancestry	Count	%
Italian	75	11.9%

Ancestry	Count	%
French	14	2.2%

Technology access

Metric	% of households
Computer access	44.1%
Internet access	73.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 20628

What city is ZIP code 20628 in?

ZIP code 20628 is primarily assigned to Dameron, Maryland.

What county is ZIP code 20628 in?

ZIP code 20628 falls within Saint Marys County, Maryland.

Does ZIP code 20628 have a large retiree population?

69% of households in ZIP code 20628 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 20628 mostly owner-occupied?

93% of occupied units in ZIP code 20628 are owner-occupied, well above the national average.

Does ZIP code 20628 have a large veteran population?

22% of civilians in ZIP code 20628 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 20628?

The median home value in ZIP code 20628 is $432,400.

What timezone is ZIP code 20628 in?

ZIP code 20628 observes the EST timezone.