Potomac ZIP Codes — Montgomery County, MD

There are 2 unique ZIP codes in Potomac, Maryland. Area code: 301.

ZIP codes

33.83

sq mi land

3.05

sq mi water

301

area code

Potomac, MD ZIP code map

About Potomac, MD

Potomac, MD is a scenic and affluent suburb located in Montgomery County, Maryland. Known for its lush landscapes and luxurious homes, Potomac provides a peaceful retreat from the hustle and bustle of nearby Washington, D.C. The community is celebrated for its strong schools, beautiful parks, and vibrant local culture.

Location & geography

Potomac is situated approximately 20 miles northwest of downtown Washington, D.C., making it an attractive location for commuters. Neighboring cities include Rockville, which is about 10 miles away, Bethesda, located 11 miles southeast, and Gaithersburg, approximately 12 miles to the northeast. Covering a total land area of 67.65 square miles, Potomac also features 6.10 square miles of water, providing a blend of wooded areas and recreational waterways.

Community & economy

The character of Potomac is defined by its affluent neighborhoods and a strong sense of community among residents. The area boasts a diverse array of industries, including innovative technology, health services, and education-related businesses. Daily life in Potomac often revolves around outdoor activities in local parks, community events, and the pursuit of excellence in educational and cultural engagements.

Transportation

Potomac is conveniently accessible via several major highways, including Maryland Route 189 and the Capital Beltway (I-495). The nearest airport is Ronald Reagan Washington National Airport, located about 25 miles to the southeast, while Dulles International Airport is approximately 30 miles to the northwest. Public transit options, such as the Metrobus service, help residents commute to nearby areas efficiently.

History

Originally part of the area settled by European colonists in the 1700s, Potomac has transformed from rural farmland into a suburban haven. Throughout its history, the community has developed a reputation for its high-quality living standards and strong emphasis on education. Notable events include the establishment of parks and recreational areas that enhance the quality of life for residents.

Did you know?

One surprising fact about Potomac is its designation as one of the wealthiest neighborhoods in the United States, characterized by elaborate estates and large homes. Additionally, Potomac is home to the renowned Great Falls, a natural wonder that attracts both locals and tourists.

ZIP codes for Potomac, MD (2)

ZIP code	City	County	Map
20854	Potomac	Montgomery	View map
20859	Potomac	Montgomery	View map

Demographics & statistics

49,320

Population

48.1

Median age

$241,697

Median household income

$106,681

Per capita income

$1,042,200

Median home value

$3,056

Median monthly rent

89.9%

Home ownership

2.7%

Poverty rate

3.5%

Unemployment

15,520

Housing units

85.7%

Bachelor's or higher

Age distribution

Male Female

1,079

Under 5

1,089

1,287

5–9

1,298

2,066

10–14

2,085

2,182

15–19

2,201

960

20–24

968

1,159

25–34

1,169

2,462

35–44

2,485

4,008

45–54

4,044

1,951

55–59

1,969

1,745

60–64

1,760

3,078

65–74

3,106

1,955

75–84

1,972

618

85+

624

← Male

Female →

Age summary

Group	Count	%
Under 18	11,848	24.0%
18 and over	37,472	76.0%
65 and over	11,353	23.0%
Median age	48.1 years

Race & ethnicity

White 60.5%

Asian 20.3%

Two or more races 7.3%

Hispanic or Latino 5.6%

Black or African American 4.6%

Other race 1.7%

Group	Count	%
White	31,620	60.5%
Asian	10,589	20.3%
Two or more races	3,817	7.3%
Hispanic or Latino	2,942	5.6%
Black or African American	2,390	4.6%
Other race	903	1.7%

Household income

Under $10k 1.5%

$10k–$15k 0.6%

$15k–$25k 1.3%

$25k–$35k 1.1%

$35k–$50k 3.0%

$50k–$75k 5.8%

$75k–$100k 4.5%

$100k–$150k 10.7%

$150k–$200k 11.6%

$200k+ 59.8%

Range	% of households
Under $10k	1.5%
$10k–$15k	0.6%
$15k–$25k	1.3%
$25k–$35k	1.1%
$35k–$50k	3.0%
$50k–$75k	5.8%
$75k–$100k	4.5%
$100k–$150k	10.7%
$150k–$200k	11.6%
$200k+	59.8%
Median income	$241,697

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.5%

$100k–$150k 0.3%

$150k–$200k 0.3%

$200k–$300k 0.5%

$300k–$500k 2.0%

$500k–$1M 42.3%

$1M+ 53.2%

Housing overview

Metric	Value
Median home value	$1,042,200
Median rent / month	$3,056
Owner occupied	89.9%
Renter occupied	10.1%
Vacant	2.9%
Single-family detached	80.3%
Large apartment buildings	5.2%
Mobile homes	0.4%
Median rooms	10.0
Avg household size (owned)	2.95

Year built

Era	%
2020 or later	0.1%
2010–2019	5.6%
2000–2009	7.1%
1990–1999	14.2%
1980–1989	20.2%
1970–1979	25.9%
1960–1969	21.3%
1950–1959	4.1%
1940–1949	1.3%
1939 or earlier	0.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	1.4%
2 bedrooms	4.9%
3 bedrooms	13.0%
4 bedrooms	41.7%
5+ bedrooms	38.4%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	18.9%
2 vehicles	51.4%
3 or more	28.4%

Heating fuel

Fuel type	%
Utility gas	65.5%
Electricity	25.8%
Propane / LP gas	2.0%
Fuel oil	5.4%
Solar	0.2%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	12,421	74.4%
Cohabiting couple	170	1.0%
Male householder, no spouse	1,383	8.3%
Female householder, no spouse	2,727	16.3%
Households with children under 18	6,449	38.6%
Households with seniors (65+)	7,173	42.9%
Average household size	2.92

Marital status

Status	Male	Female
Never married	23.6%	21.0%
Married	69.9%	63.9%
Separated	0.5%	0.6%
Widowed	1.6%	9.0%
Divorced	4.5%	5.6%

Education

Less than 9th grade 1.5%

Some HS, no diploma 1.5%

HS graduate 3.5%

Some college, no degree 5.6%

Associate's degree 2.4%

Bachelor's degree 29.6%

Graduate / professional 56.1%

Metric	%
HS diploma or higher	97.1%
Bachelor's or higher	85.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	912	6.8%
Kindergarten	420	3.1%
Elementary school	5,647	42.0%
High school	3,977	29.6%
College / grad school	2,496	18.6%

Employment

Industry of employment

Professional & management 28.2%

Education & healthcare 22.7%

Public administration 15.2%

Finance & real estate 10.8%

Other services 5.0%

Retail trade 4.5%

Arts, food & hospitality 3.8%

Manufacturing 2.7%

Information 2.1%

Wholesale trade 1.9%

Construction 1.8%

Transportation & utilities 1.3%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	77.8%
Service	6.9%
Sales & office	12.9%
Natural resources & construction	0.8%
Production & transportation	1.7%

Employment type

Type	%
Private sector	69.3%
Government	23.2%
Self-employed	7.2%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	59.7%
Carpool	5.5%
Public transit	4.1%
Walk	1.0%
Other means	2.0%
Avg commute (minutes)	31.6

Poverty

All people 2.7%

Under 18 years 2.3%

18 and over 2.9%

Married-couple families 1.0%

Female-led households 8.4%

Income support

Source	% of households
Social Security	34.7%
Retirement income	30.4%
Supplemental Security	1.5%
Cash public assistance	0.9%
Food stamps / SNAP	1.7%

Health indicators

Condition	%
High blood pressure	29.0%
High cholesterol	37.8%
Heart disease	5.0%
Stroke	2.1%
Asthma	7.2%
Arthritis	20.3%
Kidney disease	2.4%
Pulmonary disease	3.6%
Cancer	7.6%

Behavior / access	%
Binge drinking	11.3%
No physical activity	12.8%
Less than 7 hrs sleep	25.7%
Fair or poor health	6.7%
Poor mental health	8.9%
Poor physical health	5.4%
No health insurance	6.3%
Visited doctor (checkup)	75.6%
Visited dentist	78.2%
Cholesterol screening	96.0%
Teeth loss	3.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,746	4.7%

Disability	%
Any disability	7.7%
Under 18	3.0%
18–64 years	5.4%
65 and over	17.9%

Health insurance coverage

Type	%
Private insurance	90.8%
Public insurance	24.0%
Uninsured under 19	0.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	47,152	95.6%
Spanish	3,875	8.2%
Other Indo-European	394	0.8%
Asian & Pacific Islander	1,234	2.6%
Other languages	2,168	4.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	35,346	71.7%
Born in same state	34,421	69.8%
Born in different state	10,038	20.4%
Foreign born	925	1.9%
Naturalized citizen	13,974	28.3%
Not a US citizen	10,269	73.5%

Ancestry

Ancestry	Count	%
Italian	3,654	7.4%
French	2,901	5.9%
Arab	2,426	4.9%
English	332	0.7%
Irish	314	0.6%

Ancestry	Count	%
Polish	249	0.5%
Norwegian	197	0.4%
German	146	0.3%
Dutch	103	0.2%

Technology access

Metric	% of households
Computer access	33.9%
Internet access	99.4%

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

Frequently asked questions

What ZIP codes does Potomac, MD have?

Potomac, MD has one ZIP code: 20854. Each ZIP code serves a distinct delivery area within the city and surrounding region.