Olney ZIP Code List — Montgomery County, MD

There are 2 unique ZIP codes in Olney, Maryland. Area code: 240/301.

ZIP codes

9.61

sq mi land

0.02

sq mi water

240/301

area code

Olney, MD ZIP code map

About Olney, MD

Olney is a charming city located in Maryland, known for its suburban allure and strong community spirit. It is situated in Montgomery County and is characterized by its peaceful neighborhoods, making it an appealing choice for families and professionals alike. With a blend of green spaces and local amenities, Olney offers residents a comfortable lifestyle within reach of metropolitan resources.

Location & geography

Geographically, Olney is part of Montgomery County and lies about 20 miles north of Washington, D.C. The city is bordered by nearby cities such as Rockville, approximately 12 miles to the southwest, and Silver Spring, roughly 15 miles to the south. The total land area of Olney is 9.61 square miles, with a small water area of 0.02 square miles, creating a predominantly land-based terrain.

Community & economy

The community in Olney is characterized by its family-oriented atmosphere and commitment to maintaining a high quality of life. Residents often engage in local activities and events, supported by several parks and recreational facilities that promote an active lifestyle. The economy features a mix of retail, professional services, and education, making it a well-rounded place for daily living.

Transportation

Transportation in Olney is facilitated by major highways, including Maryland Route 97, which provides direct access to neighboring areas. The nearest airport is the Montgomery County Airpark, situated approximately 10 miles away, offering general aviation services. Public transit options are available, primarily serving the greater Montgomery County area.

History

Olney was founded in the early 19th century and has evolved from a small rural community into a bustling suburban area. Historically, agriculture was a key industry, but over time, it has transitioned into residential and commercial development due to its proximity to Washington, D.C. Notable events in the community's development include the establishment of various schools and parks that cater to the growing population.

Did you know?

A little-known fact about Olney is that it features one of the last remaining drive-in theaters in the Maryland area, offering a nostalgic experience for families. Additionally, Olney is home to a number of local festivals that celebrate the city’s rich diversity and community spirit.

ZIP codes for Olney, MD (2)

ZIP code	City	County	Map
20830	Olney	Montgomery	View map
20832	Olney	Montgomery	View map

Demographics & statistics

25,488

Population

41.2

Median age

$160,287

Median household income

$64,750

Per capita income

$572,800

Median home value

$2,179

Median monthly rent

87.5%

Home ownership

3.1%

Poverty rate

3.6%

Unemployment

7,590

Housing units

62.6%

Bachelor's or higher

Age distribution

Male Female

737

Under 5

756

984

5–9

1,011

1,008

10–14

1,034

818

15–19

840

651

20–24

668

1,088

25–34

1,117

1,688

35–44

1,734

1,832

45–54

1,881

895

55–59

918

883

60–64

907

1,232

65–74

1,265

619

75–84

636

141

85+

145

← Male

Female →

Age summary

Group	Count	%
Under 18	6,719	26.4%
18 and over	18,769	73.6%
65 and over	4,038	15.8%
Median age	41.2 years

Race & ethnicity

White 55.8%

Asian 12.1%

Black or African American 11.8%

Hispanic or Latino 8.2%

Two or more races 8%

Other race 3.7%

American Indian / Alaska Native 0.3%

Group	Count	%
White	15,498	55.8%
Asian	3,361	12.1%
Black or African American	3,283	11.8%
Hispanic or Latino	2,262	8.2%
Two or more races	2,224	8%
Other race	1,039	3.7%
American Indian / Alaska Native	83	0.3%

Household income

Under $10k 1.6%

$10k–$15k 1.7%

$15k–$25k 3.1%

$25k–$35k 2.2%

$35k–$50k 3.8%

$50k–$75k 7.2%

$75k–$100k 6.8%

$100k–$150k 19.0%

$150k–$200k 17.7%

$200k+ 36.9%

Range	% of households
Under $10k	1.6%
$10k–$15k	1.7%
$15k–$25k	3.1%
$25k–$35k	2.2%
$35k–$50k	3.8%
$50k–$75k	7.2%
$75k–$100k	6.8%
$100k–$150k	19.0%
$150k–$200k	17.7%
$200k+	36.9%
Median income	$160,287

Housing

Home values

Under $50k 0.6%

$50k–$100k 0.9%

$100k–$150k 0.2%

$150k–$200k 1.6%

$200k–$300k 6.1%

$300k–$500k 28.1%

$500k–$1M 58.4%

$1M+ 4.1%

Housing overview

Metric	Value
Median home value	$572,800
Median rent / month	$2,179
Owner occupied	87.5%
Renter occupied	12.5%
Vacant	2.0%
Single-family detached	59.7%
Large apartment buildings	2.4%
Mobile homes	0.0%
Median rooms	7.8
Avg household size (owned)	3.00

Year built

Era	%
2020 or later	0.6%
2010–2019	3.9%
2000–2009	7.5%
1990–1999	22.5%
1980–1989	37.4%
1970–1979	19.9%
1960–1969	4.7%
1950–1959	2.0%
1940–1949	0.6%
1939 or earlier	0.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.5%
2 bedrooms	9.0%
3 bedrooms	36.5%
4 bedrooms	40.1%
5+ bedrooms	12.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	20.8%
2 vehicles	50.8%
3 or more	26.4%

Heating fuel

Fuel type	%
Utility gas	59.9%
Electricity	34.4%
Propane / LP gas	2.4%
Fuel oil	2.1%
Wood	0.5%
Solar	0.2%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	5,776	68.2%
Cohabiting couple	232	2.7%
Male householder, no spouse	545	6.4%
Female householder, no spouse	1,917	22.6%
Households with children under 18	3,559	42.0%
Households with seniors (65+)	2,649	31.3%
Average household size	3.00

Marital status

Status	Male	Female
Never married	29.7%	25.1%
Married	65.1%	55.9%
Separated	1.2%	1.5%
Widowed	0.7%	7.0%
Divorced	3.3%	10.5%

Education

Less than 9th grade 2.0%

Some HS, no diploma 2.6%

HS graduate 13.4%

Some college, no degree 14.1%

Associate's degree 5.3%

Bachelor's degree 33.2%

Graduate / professional 29.4%

Metric	%
HS diploma or higher	95.3%
Bachelor's or higher	62.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	591	7.9%
Kindergarten	358	4.8%
Elementary school	3,204	42.6%
High school	1,710	22.7%
College / grad school	1,660	22.1%

Employment

Industry of employment

Professional & management 23.0%

Education & healthcare 21.1%

Public administration 13.5%

Arts, food & hospitality 8.0%

Finance & real estate 7.1%

Retail trade 6.7%

Construction 6.1%

Other services 5.6%

Manufacturing 3.5%

Information 2.4%

Transportation & utilities 2.1%

Wholesale trade 0.7%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	63.1%
Service	11.1%
Sales & office	17.0%
Natural resources & construction	4.8%
Production & transportation	4.0%

Employment type

Type	%
Private sector	68.5%
Government	25.2%
Self-employed	5.8%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	63.3%
Carpool	6.4%
Public transit	3.3%
Walk	2.3%
Other means	0.6%
Avg commute (minutes)	33.7

Poverty

All people 3.1%

Under 18 years 2.7%

18 and over 3.2%

Married-couple families 1.6%

Female-led households 3.1%

Income support

Source	% of households
Social Security	26.1%
Retirement income	24.2%
Supplemental Security	2.6%
Cash public assistance	2.5%
Food stamps / SNAP	4.1%

Health indicators

Condition	%
High blood pressure	26.3%
High cholesterol	33.4%
Heart disease	4.2%
Stroke	2.0%
Asthma	8.1%
Arthritis	18.1%
Kidney disease	2.1%
Pulmonary disease	3.7%
Cancer	5.9%

Behavior / access	%
Binge drinking	13.6%
No physical activity	14.1%
Less than 7 hrs sleep	28.6%
Fair or poor health	7.6%
Poor mental health	11.1%
Poor physical health	5.9%
No health insurance	8.5%
Visited doctor (checkup)	72.8%
Visited dentist	74.1%
Cholesterol screening	94.1%
Teeth loss	5.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	799	4.3%

Disability	%
Any disability	10.3%
Under 18	9.5%
18–64 years	6.5%
65 and over	25.5%

Health insurance coverage

Type	%
Private insurance	87.6%
Public insurance	24.0%
Uninsured under 19	0.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,995	94.1%
Spanish	1,922	8.0%
Other Indo-European	595	2.5%
Asian & Pacific Islander	346	1.4%
Other languages	667	2.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	19,647	77.1%
Born in same state	19,005	74.6%
Born in different state	9,157	35.9%
Foreign born	642	2.5%
Naturalized citizen	5,841	22.9%
Not a US citizen	4,234	72.5%

Ancestry

Ancestry	Count	%
Italian	2,834	11.1%
French	2,155	8.5%
Arab	1,141	4.5%
Polish	235	0.9%
Norwegian	169	0.7%

Ancestry	Count	%
Irish	155	0.6%
English	120	0.5%
German	64	0.3%
Dutch	42	0.2%

Technology access

Metric	% of households
Computer access	33.2%
Internet access	97.2%

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

Frequently asked questions

What is the ZIP code for Olney, MD?

Olney, MD has one ZIP code: 20832.

What is the main ZIP code for Olney, MD?

The primary ZIP code for Olney, MD is 20832. The city uses area code 240 or 301 for phone service.

What county is Olney, MD in?

Olney is located in Montgomery County, Maryland.

How many ZIP codes are in Olney, MD?

Olney, MD has 1 ZIP code.

What is the ZIP code for the Olney area near the Olney Theatre Center?

The Olney Theatre Center, a prominent cultural landmark in Olney, Maryland, is located in ZIP code 20832, which serves the entire Olney community in Montgomery County.

What ZIP code should I use for mailing addresses in downtown Olney, MD?

All mailing addresses in downtown Olney and throughout the city use ZIP code 20832, as it is the single ZIP code designation for the entire Olney area.