20609 ZIP Code — Avenue, MD

Saint Marys County, Maryland

ZIP code 20609 is located in Avenue, Maryland, within Saint Marys County. It covers approximately 10.02 square miles and serves a population of 1,240 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301.

About ZIP code 20609

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $423,800. Owner-occupancy is high at 92%, well above the national average.

The gap between median ($112,625) and mean household income suggests income inequality — a small number of higher earners pull the average up. 57% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 53 minutes suggests many residents work outside the immediate area.

College attainment at 16% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 20609 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

1,240

population

10.02

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20609 ZIP code map

Cities in ZIP code 20609

Below are the cities the US Postal Service accepts for ZIP code 20609. Using any city not on this list may result in mail delivery delays.

City	Status
Avenue	Preferred

Nearby ZIP codes

20606 Abell (1.3 mi) 20618 Bushwood (2.9 mi) 20624 Clements (4.4 mi) 20626 Coltons Point (4.5 mi) 20621 Chaptico (4.9 mi) 20650 Leonardtown (6.4 mi) 20656 Loveville (7.2 mi) 20664 Newburg (10.4 mi) 20659 Mechanicsville (11 mi) 20636 Hollywood (11 mi) 20645 Issue (11.2 mi) 22520 Montross (11.5 mi)

Demographics updated 05/2026

Population
Total population	1,240
Population density	124 / sq mi
State FIPS	24
County FIPS	037

Geography
Land area	10.02 sq mi
Water area	3.16 sq mi
Latitude	38.2693
Longitude	-76.7497
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	43.2%	24.3%	28.2%
$50k – $100k	18.9%	27.4%	28.2%
$100k – $200k	29.3%	36.2%	30.1%
Over $200k	8.6%	12.1%	13.4%

Demographics & statistics

1,240

Population

124

People per sq mi

54.1

Median age

$112,625

Median household income

$55,981

Per capita income

$423,800

Median home value

Median monthly rent

92.0%

Home ownership

1.5%

Poverty rate

5.6%

Unemployment

487

Housing units

15.5%

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

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	198	16.0%
18 and over	1,042	84.0%
65 and over	328	26.5%
Median age	54.1 years

Race & ethnicity

White 76.8%

Black or African American 20.8%

Asian 1.4%

Two or more races 1%

Group	Count	%
White	952	76.8%
Black or African American	258	20.8%
Asian	17	1.4%
Two or more races	13	1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	43.2%	24.3%	28.2%
$50k – $100k	18.9%	27.4%	28.2%
$100k – $200k	29.3%	36.2%	30.1%
Over $200k	8.6%	12.1%	13.4%

Under $10k 2.7%

$15k–$25k 6.4%

$25k–$35k 9.3%

$35k–$50k 10.7%

$50k–$75k 4.7%

$75k–$100k 3.3%

$100k–$150k 30.9%

$150k–$200k 14.0%

$200k+ 18.0%

Range	% of households
Under $10k	2.7%
$15k–$25k	6.4%
$25k–$35k	9.3%
$35k–$50k	10.7%
$50k–$75k	4.7%
$75k–$100k	3.3%
$100k–$150k	30.9%
$150k–$200k	14.0%
$200k+	18.0%
Median income	$112,625

Housing

Home values

Under $50k 3.6%

$200k–$300k 29.2%

$300k–$500k 32.6%

$500k–$1M 15.2%

$1M+ 19.3%

Housing overview

Metric	Value
Median home value	$423,800
Median rent / month	$0
Owner occupied	92.0%
Renter occupied	8.0%
Vacant	14.0%
Single-family detached	94.3%
Large apartment buildings	0.0%
Mobile homes	4.2%
Median rooms	6.4
Avg household size (owned)	2.84

Year built

Era	%
2020 or later	0.0%
2010–2019	9.0%
2000–2009	13.6%
1990–1999	14.9%
1980–1989	9.9%
1970–1979	11.5%
1960–1969	18.4%
1950–1959	6.1%
1940–1949	1.9%
1939 or earlier	14.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.5%
2 bedrooms	18.4%
3 bedrooms	59.1%
4 bedrooms	16.4%
5+ bedrooms	4.6%

Vehicles per household

Vehicles	% of households
No vehicle	6.4%
1 vehicle	17.1%
2 vehicles	37.1%
3 or more	39.3%

Heating fuel

Fuel type	%
Utility gas	2.2%
Electricity	35.1%
Propane / LP gas	11.1%
Fuel oil	40.9%
Wood	4.7%
No fuel used	6.0%

Households & families

Household type	Count	%
Married-couple family	242	53.8%
Cohabiting couple	39	8.7%
Male householder, no spouse	103	22.9%
Female householder, no spouse	66	14.7%
Households with children under 18	108	24.0%
Households with seniors (65+)	239	53.1%
Average household size	2.76

Marital status

Status	Male	Female
Never married	32.5%	21.7%
Married	46.6%	48.3%
Separated	0.0%	0.0%
Widowed	12.8%	9.5%
Divorced	8.1%	20.5%

Education

Less than 9th grade 6.2%

Some HS, no diploma 7.3%

HS graduate 41.4%

Some college, no degree 19.2%

Associate's degree 10.3%

Bachelor's degree 7.7%

Graduate / professional 7.8%

Metric	%
HS diploma or higher	86.5%
Bachelor's or higher	15.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	9	3.8%
Elementary school	90	37.7%
High school	54	22.6%
College / grad school	86	36.0%

Employment

Industry of employment

Education & healthcare 26.2%

Public administration 16.6%

Construction 11.4%

Retail trade 11.2%

Professional & management 8.1%

Other services 6.7%

Manufacturing 6.3%

Transportation & utilities 5.9%

Arts, food & hospitality 5.3%

Finance & real estate 1.4%

Wholesale trade 0.8%

Occupation

Category	%
Management, business & arts	47.9%
Service	18.7%
Sales & office	16.4%
Natural resources & construction	12.2%
Production & transportation	4.7%

Employment type

Type	%
Private sector	76.9%
Government	16.6%
Self-employed	6.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	64.7%
Carpool	16.2%
Public transit	2.0%
Walk	0.0%
Work from home	16.4%
Other means	0.8%
Avg commute (minutes)	52.6

Poverty

All people 1.5%

Under 18 years 0.0%

18 and over 1.7%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	57.3%
Retirement income	42.7%
Supplemental Security	8.2%
Cash public assistance	1.8%
Food stamps / SNAP	4.0%

Health indicators

Condition	%
Obesity	38.5%
High blood pressure	42.5%
High cholesterol	39.7%
Diabetes	13.2%
Heart disease	8.6%
Stroke	4.0%
Asthma	10.1%
Arthritis	33.3%
Kidney disease	3.6%
Pulmonary disease	8.8%
Cancer	8.6%

Behavior / access	%
Smoking	19.2%
Binge drinking	13.3%
No physical activity	27.2%
Less than 7 hrs sleep	35.8%
Depression	17.5%
Fair or poor health	15.7%
Poor mental health	14.0%
Poor physical health	10.9%
No health insurance	11.0%
Visited doctor (checkup)	78.9%
Visited dentist	64.2%
Cholesterol screening	92.1%
Teeth loss	15.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	27	2.6%

Disability	%
Any disability	9.5%
Under 18	0.0%
18–64 years	9.2%
65 and over	15.9%

Health insurance coverage

Type	%
Private insurance	69.9%
Public insurance	44.9%
No insurance	3.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,196	96.5%
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)	1,233	99.4%
Born in same state	1,206	97.3%
Born in different state	913	73.6%
Foreign born	27	2.2%
Naturalized citizen	7	0.6%
Not a US citizen	7	100.0%

Ancestry

Ancestry	Count	%
French	157	12.7%
Italian	100	8.1%

Ancestry	Count	%
Arab	56	4.5%

Technology access

Metric	% of households
Computer access	36.3%
Internet access	88.2%

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

Frequently asked questions about ZIP code 20609

What city is ZIP code 20609 in?

ZIP code 20609 is primarily assigned to Avenue, Maryland.

What county is ZIP code 20609 in?

ZIP code 20609 falls within Saint Marys County, Maryland.

Does ZIP code 20609 have a large retiree population?

57% of households in ZIP code 20609 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 20609 mostly owner-occupied?

92% of occupied units in ZIP code 20609 are owner-occupied, well above the national average.

Does ZIP code 20609 have an older population?

27% of residents in ZIP code 20609 are 65 or older, above the national average of ~17%.

What is the typical home value in ZIP code 20609?

The median home value in ZIP code 20609 is $423,800.

What timezone is ZIP code 20609 in?

ZIP code 20609 observes the EST timezone.