20621 ZIP Code — Chaptico, MD

Saint Marys County, Maryland

ZIP code 20621 is located in Chaptico, Maryland, within Saint Marys County. It covers approximately 13.86 square miles and serves a population of 775 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301.

About ZIP code 20621

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $440,600. Owner-occupancy is high at 97%, well above the national average.

The dominant occupation class is natural resources, construction, and trades, with construction as the leading industry. An above-average commute of 60 minutes suggests many residents work outside the immediate area.

College attainment at 3% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 20621 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

775

population

13.86

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20621 ZIP code map

Cities in ZIP code 20621

Below are the cities the US Postal Service accepts for ZIP code 20621. Using any city not on this list may result in mail delivery delays.

City	Status
Chaptico	Acceptable
Chaptico	Preferred

Nearby ZIP codes

20618 Bushwood (2.7 mi) 20624 Clements (3.3 mi) 20609 Avenue (4.9 mi) 20606 Abell (6.1 mi) 20656 Loveville (6.8 mi) 20664 Newburg (7.4 mi) 20626 Coltons Point (7.9 mi) 20622 Charlotte Hall (8.2 mi) 20659 Mechanicsville (8.3 mi) 20645 Issue (9.2 mi) 20650 Leonardtown (10 mi) 20632 Faulkner (11.5 mi)

Demographics updated 05/2026

Population
Total population	775
Population density	56 / sq mi
State FIPS	24
County FIPS	037

Geography
Land area	13.86 sq mi
Water area	0.11 sq mi
Latitude	38.3307
Longitude	-76.7966
Timezone	Eastern (ET)
Area code	301

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	65.6%	24.3%	28.2%
$50k – $100k	9.4%	27.4%	28.2%
$100k – $200k	10.1%	36.2%	30.1%
Over $200k	14.9%	12.1%	13.4%

Demographics & statistics

775

Population

People per sq mi

60.2

Median age

Median household income

$54,482

Per capita income

$440,600

Median home value

Median monthly rent

96.5%

Home ownership

16.0%

Poverty rate

0.0%

Unemployment

630

Housing units

2.8%

Bachelor's or higher

Age distribution

Male Female

10–14

15–19

20–24

25–34

35–44

109

45–54

55–59

104

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	19	2.5%
18 and over	756	97.5%
65 and over	200	25.8%
Median age	60.2 years

Race & ethnicity

White 89.2%

Black or African American 10.8%

Group	Count	%
White	691	89.2%
Black or African American	84	10.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	65.6%	24.3%	28.2%
$50k – $100k	9.4%	27.4%	28.2%
$100k – $200k	10.1%	36.2%	30.1%
Over $200k	14.9%	12.1%	13.4%

Under $10k 18.4%

$10k–$15k 0.5%

$15k–$25k 1.5%

$35k–$50k 33.2%

$50k–$75k 10.1%

$75k–$100k 3.5%

$100k–$150k 6.5%

$150k–$200k 7.3%

$200k+ 18.9%

Range	% of households
Under $10k	18.4%
$10k–$15k	0.5%
$15k–$25k	1.5%
$35k–$50k	33.2%
$50k–$75k	10.1%
$75k–$100k	3.5%
$100k–$150k	6.5%
$150k–$200k	7.3%
$200k+	18.9%
Median income	$0

Housing

Home values

Under $50k 5.2%

$200k–$300k 18.8%

$300k–$500k 54.0%

$500k–$1M 21.9%

Housing overview

Metric	Value
Median home value	$440,600
Median rent / month	$0
Owner occupied	96.5%
Renter occupied	3.5%
Vacant	38.4%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	5.8
Avg household size (owned)	1.99

Year built

Era	%
2020 or later	1.6%
2010–2019	1.6%
2000–2009	13.5%
1990–1999	9.0%
1980–1989	12.6%
1970–1979	44.9%
1960–1969	1.7%
1950–1959	11.5%
1940–1949	0.9%
1939 or earlier	2.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	14.6%
3 bedrooms	71.9%
4 bedrooms	13.5%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	20.2%
2 vehicles	44.3%
3 or more	32.7%

Heating fuel

Fuel type	%
Electricity	64.0%
Propane / LP gas	2.5%
Fuel oil	15.9%
Wood	17.6%

Households & families

Household type	Count	%
Married-couple family	139	35.0%
Cohabiting couple	0	0.0%
Male householder, no spouse	173	43.6%
Female householder, no spouse	85	21.4%
Households with children under 18	20	5.0%
Households with seniors (65+)	164	41.3%
Average household size	1.95

Marital status

Status	Male	Female
Never married	23.1%	30.7%
Married	37.0%	40.5%
Separated	5.3%	0.0%
Widowed	32.0%	24.3%
Divorced	2.6%	4.5%

Education

Less than 9th grade 1.7%

Some HS, no diploma 6.6%

HS graduate 71.1%

Some college, no degree 17.0%

Associate's degree 0.9%

Bachelor's degree 1.2%

Graduate / professional 1.5%

Metric	%
HS diploma or higher	91.7%
Bachelor's or higher	2.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	1	1.3%
High school	18	23.1%
College / grad school	59	75.6%

Employment

Industry of employment

Construction 51.3%

Professional & management 16.4%

Manufacturing 11.2%

Other services 7.2%

Public administration 4.6%

Transportation & utilities 3.4%

Agriculture & mining 2.0%

Education & healthcare 1.8%

Finance & real estate 1.2%

Arts, food & hospitality 0.8%

Occupation

Category	%
Management, business & arts	39.5%
Service	8.0%
Sales & office	1.8%
Natural resources & construction	44.3%
Production & transportation	6.4%

Employment type

Type	%
Private sector	56.5%
Government	29.1%
Self-employed	14.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.2%
Carpool	2.4%
Public transit	4.8%
Walk	0.0%
Work from home	10.6%
Other means	0.0%
Avg commute (minutes)	59.9

Poverty

All people 16.0%

Under 18 years 5.3%

18 and over 16.3%

Married-couple families 6.5%

Female-led households 0.0%

Income support

Source	% of households
Social Security	32.2%
Retirement income	12.8%
Supplemental Security	0.0%
Cash public assistance	1.8%
Food stamps / SNAP	11.8%

Health indicators

Condition	%
Obesity	41.3%
High blood pressure	41.7%
High cholesterol	35.9%
Diabetes	13.5%
Heart disease	6.8%
Stroke	3.8%
Asthma	10.5%
Arthritis	29.4%
Kidney disease	3.3%
Pulmonary disease	6.8%
Cancer	6.9%

Behavior / access	%
Smoking	18.6%
Binge drinking	13.8%
No physical activity	26.0%
Less than 7 hrs sleep	39.0%
Depression	16.6%
Fair or poor health	14.9%
Poor mental health	14.2%
Poor physical health	9.8%
No health insurance	10.7%
Visited doctor (checkup)	79.1%
Visited dentist	64.6%
Cholesterol screening	92.4%
Teeth loss	15.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	46	6.1%

Disability	%
Any disability	19.1%
Under 18	0.0%
18–64 years	23.6%
65 and over	8.5%

Health insurance coverage

Type	%
Private insurance	90.6%
Public insurance	31.1%
No insurance	0.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	775	100.0%
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)	775	100.0%
Born in same state	775	100.0%
Born in different state	533	68.8%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	139	17.9%
Italian	60	7.7%

Ancestry	Count	%
French	46	5.9%

Technology access

Metric	% of households
Computer access	51.2%
Internet access	53.1%

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

Frequently asked questions about ZIP code 20621

What city is ZIP code 20621 in?

ZIP code 20621 is primarily assigned to Chaptico, Maryland.

What county is ZIP code 20621 in?

ZIP code 20621 falls within Saint Marys County, Maryland.

Is ZIP code 20621 mostly owner-occupied?

97% of occupied units in ZIP code 20621 are owner-occupied, well above the national average.

How educated is the population of ZIP code 20621?

3% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 20621 have an older population?

26% of residents in ZIP code 20621 are 65 or older, above the national average of ~17%.

What is the poverty rate in ZIP code 20621?

16% of residents in ZIP code 20621 live below the poverty line, above the national average.

What timezone is ZIP code 20621 in?

ZIP code 20621 observes the EST timezone.