Callaway ZIP Codes — Saint Marys County, MD

There is one unique ZIP code in Callaway, Maryland and it is 20620. Area code: 240/301.

ZIP codes

4.29

sq mi land

0.02

sq mi water

240/301

area code

Callaway, MD ZIP code map

About Callaway, MD

Callaway is a charming unincorporated community located in St. Mary's County, Maryland. This quaint area is known for its natural beauty and small-town atmosphere, making it a perfect spot for those seeking tranquility. Callaway offers a distinctive blend of rural charm and proximity to modern amenities.

Location & geography

Callaway is situated in the southeastern part of Maryland, approximately 10 miles northeast of Leonardtown, the county seat. The community covers a land area of 4.29 square miles, with a water area of only 0.02 square miles, making it predominantly landlocked. The surrounding terrain features a mix of wooded areas and farmlands, contributing to the picturesque landscape of the region.

Community & economy

The character of Callaway is defined by its tight-knit community, where residents often engage in local events and maintain a friendly atmosphere. The local economy is supported by small businesses and agricultural activities, providing essential services to residents. Daily life in Callaway features a laid-back lifestyle, with access to outdoor recreational activities and local parks.

Transportation

Transportation in Callaway is facilitated by various roadways, including Maryland Route 5, which connects the community to nearby towns and cities. The nearest major airport is the Leonardtown Airport, located approximately 10 miles away, which caters to small aircraft. Public transit options are limited, so residents typically rely on personal vehicles for commuting.

History

Callaway was founded in the late 20th century and has since grown into a small, thriving community within St. Mary's County. Historically, the area has been engaged in agriculture and small-scale industries, contributing to the local economy. Notable events in Callaway's history have revolved around community gatherings and local celebrations, which foster community spirit.

Did you know?

One surprising fact about Callaway is that it has a relatively low population density, allowing for a peaceful living environment. Additionally, the community is characterized by extensive green spaces and recreational opportunities, appealing to nature lovers and outdoor enthusiasts.

ZIP codes for Callaway, MD (1)

ZIP code	City	County	Map
20620	Callaway	Saint Marys	View map

Demographics & statistics

1,325

Population

46.8

Median age

$154,128

Median household income

$49,712

Per capita income

$346,000

Median home value

$1,400

Median monthly rent

81.3%

Home ownership

2.8%

Poverty rate

0.0%

Unemployment

461

Housing units

27.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

171

25–34

147

35–44

144

45–54

124

142

55–59

122

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	128	9.7%
18 and over	1,197	90.3%
65 and over	123	9.3%
Median age	46.8 years

Race & ethnicity

White 44.6%

Two or more races 24%

Hispanic or Latino 20.1%

Black or African American 8.6%

Asian 2.8%

Group	Count	%
White	739	44.6%
Two or more races	398	24%
Hispanic or Latino	333	20.1%
Black or African American	142	8.6%
Asian	46	2.8%

Household income

Under $10k 4.8%

$10k–$15k 1.5%

$15k–$25k 3.4%

$25k–$35k 13.2%

$50k–$75k 7.4%

$100k–$150k 13.9%

$150k–$200k 26.7%

$200k+ 29.2%

Range	% of households
Under $10k	4.8%
$10k–$15k	1.5%
$15k–$25k	3.4%
$25k–$35k	13.2%
$50k–$75k	7.4%
$100k–$150k	13.9%
$150k–$200k	26.7%
$200k+	29.2%
Median income	$154,128

Housing

Home values

$50k–$100k 4.1%

$150k–$200k 6.7%

$200k–$300k 27.1%

$300k–$500k 46.0%

$500k–$1M 16.0%

Housing overview

Metric	Value
Median home value	$346,000
Median rent / month	$1,400
Owner occupied	81.3%
Renter occupied	18.7%
Vacant	13.5%
Single-family detached	78.2%
Large apartment buildings	0.0%
Mobile homes	5.6%
Median rooms	6.6
Avg household size (owned)	2.99

Year built

Era	%
2020 or later	0.0%
2010–2019	1.6%
2000–2009	15.8%
1990–1999	42.5%
1980–1989	14.4%
1970–1979	13.1%
1960–1969	3.3%
1950–1959	9.3%
1940–1949	0.0%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	4.2%
1 bedroom	0.0%
2 bedrooms	9.3%
3 bedrooms	54.7%
4 bedrooms	31.8%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	4.8%
1 vehicle	22.9%
2 vehicles	35.5%
3 or more	36.8%

Heating fuel

Fuel type	%
Electricity	80.0%
Propane / LP gas	8.6%
Fuel oil	7.6%
Solar	1.9%
No fuel used	1.9%

Households & families

Household type	Count	%
Married-couple family	298	62.6%
Cohabiting couple	45	9.5%
Male householder, no spouse	57	12.0%
Female householder, no spouse	76	16.0%
Households with children under 18	51	10.7%
Households with seniors (65+)	95	20.0%
Average household size	2.76

Marital status

Status	Male	Female
Never married	39.5%	8.7%
Married	47.8%	75.3%
Separated	0.0%	0.0%
Widowed	3.7%	3.9%
Divorced	9.0%	12.1%

Education

Less than 9th grade 0.7%

Some HS, no diploma 1.6%

HS graduate 28.7%

Some college, no degree 32.9%

Associate's degree 8.7%

Bachelor's degree 19.9%

Graduate / professional 7.6%

Metric	%
HS diploma or higher	97.7%
Bachelor's or higher	27.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	8	3.9%
Elementary school	82	40.0%
High school	33	16.1%
College / grad school	82	40.0%

Employment

Industry of employment

Public administration 37.2%

Professional & management 18.9%

Education & healthcare 13.5%

Construction 9.8%

Other services 9.4%

Retail trade 6.6%

Finance & real estate 3.1%

Information 1.4%

Occupation

Category	%
Management, business & arts	61.4%
Service	17.1%
Sales & office	16.3%
Natural resources & construction	5.2%
Production & transportation	0.0%

Employment type

Type	%
Private sector	52.6%
Government	39.5%
Self-employed	7.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.6%
Carpool	3.8%
Public transit	4.0%
Walk	2.6%
Other means	0.0%
Avg commute (minutes)	24.0

Poverty

All people 2.8%

Under 18 years 0.0%

18 and over 3.1%

Married-couple families 0.0%

Female-led households 38.9%

Income support

Source	% of households
Social Security	20.0%
Retirement income	52.3%
Supplemental Security	3.2%
Cash public assistance	0.0%
Food stamps / SNAP	3.6%

Health indicators

Condition	%
High blood pressure	32.5%
High cholesterol	32.5%
Heart disease	4.8%
Stroke	2.4%
Asthma	9.9%
Arthritis	22.9%
Kidney disease	2.3%
Pulmonary disease	5.0%
Cancer	5.6%

Behavior / access	%
Binge drinking	16.0%
No physical activity	20.2%
Less than 7 hrs sleep	36.1%
Fair or poor health	10.6%
Poor mental health	13.9%
Poor physical health	7.7%
No health insurance	9.3%
Visited doctor (checkup)	76.1%
Visited dentist	69.6%
Cholesterol screening	91.7%
Teeth loss	10.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	225	19.1%

Disability	%
Any disability	22.2%
Under 18	0.0%
18–64 years	24.1%
65 and over	29.5%

Health insurance coverage

Type	%
Private insurance	88.4%
Public insurance	20.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,301	98.2%
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)	1,247	94.1%
Born in same state	1,247	94.1%
Born in different state	291	22.0%
Foreign born	0	0.0%
Naturalized citizen	78	5.9%
Not a US citizen	21	26.9%

Ancestry

Ancestry	Count	%
Italian	272	20.5%
Arab	199	15%
French	74	5.6%

Ancestry	Count	%
English	11	0.8%
German	9	0.7%

Technology access

Metric	% of households
Computer access	35.9%
Internet access	93.5%

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

Frequently asked questions

What ZIP codes does Callaway, MD have?

Callaway, MD has one ZIP code: 20620. Each ZIP code serves a distinct delivery area within the city and surrounding region.