20871 ZIP Code — Clarksburg, MD

Montgomery County, Maryland

ZIP code 20871 is located in Clarksburg, Maryland, within Montgomery County. It covers approximately 22.88 square miles and serves a population of 27,420 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 240/301.

About ZIP code 20871

The housing stock consists of a mix of housing types. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $592,200. Owner-occupancy is high at 88%, well above the national average.

Median household income is $162,472. The poverty rate of 4% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 34 minutes is near the national average. Remote work is prevalent — 21% of workers work from home.

Educational attainment is high — 67% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20871 reflects a community defined by a highly educated population, high homeownership, and a high rate of remote workers.

27,420

population

22.88

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20871 ZIP code map

Cities in ZIP code 20871

Below are the cities the US Postal Service accepts for ZIP code 20871. Using any city not on this list may result in mail delivery delays.

City	Status
Clarksburg	Acceptable
Clarksburg	Preferred

Nearby ZIP codes

20872 Damascus (3.9 mi) 20838 Barnesville (4.1 mi) 20876 Germantown (4.7 mi) 20841 Boyds (5.6 mi) 21770 Monrovia (5.9 mi) 21704 Frederick (7.3 mi) 20882 Gaithersburg (8.1 mi) 20886 Montgomery Village (8.2 mi) 20879 Gaithersburg (8.3 mi) 20842 Dickerson (8.5 mi) 21710 Adamstown (8.6 mi) 20874 Germantown (8.7 mi)

Demographics updated 05/2026

Population
Total population	27,420
Population density	1,198 / sq mi
State FIPS	24
County FIPS	031

Geography
Land area	22.88 sq mi
Water area	0.04 sq mi
Latitude	39.2656
Longitude	-77.2863
Timezone	Eastern (ET)
Area code	240/301

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	9.6%	20.6%	28.2%
$50k – $100k	21.0%	24.2%	28.2%
$100k – $200k	42.9%	31.9%	30.1%
Over $200k	26.5%	23.3%	13.4%

Demographics & statistics

27,420

Population

1,198

People per sq mi

37.4

Median age

$162,472

Median household income

$55,580

Per capita income

$592,200

Median home value

$2,233

Median monthly rent

88.2%

Home ownership

4.1%

Poverty rate

4.7%

Unemployment

7,715

Housing units

66.5%

Bachelor's or higher

Age distribution

Male Female

1,167

Under 5

1,225

1,019

5–9

1,069

1,316

10–14

1,381

764

15–19

801

449

20–24

471

1,366

25–34

1,434

2,605

35–44

2,733

2,141

45–54

2,247

765

55–59

803

702

60–64

737

750

65–74

786

268

75–84

281

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	8,315	30.3%
18 and over	19,105	69.7%
65 and over	2,225	8.1%
Median age	37.4 years

Race & ethnicity

Asian 34.4%

White 30.8%

Black or African American 14.9%

Hispanic or Latino 8.1%

Two or more races 6.4%

Other race 4.9%

American Indian / Alaska Native 0.4%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
Asian	10,267	34.4%
White	9,193	30.8%
Black or African American	4,449	14.9%
Hispanic or Latino	2,402	8.1%
Two or more races	1,901	6.4%
Other race	1,461	4.9%
American Indian / Alaska Native	130	0.4%
Native Hawaiian / Pacific Islander	19	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	9.6%	20.6%	28.2%
$50k – $100k	21.0%	24.2%	28.2%
$100k – $200k	42.9%	31.9%	30.1%
Over $200k	26.5%	23.3%	13.4%

Under $10k 1.7%

$10k–$15k 1.4%

$15k–$25k 1.5%

$25k–$35k 2.7%

$35k–$50k 2.5%

$50k–$75k 5.7%

$75k–$100k 11.6%

$100k–$150k 18.1%

$150k–$200k 20.4%

$200k+ 34.4%

Range	% of households
Under $10k	1.7%
$10k–$15k	1.4%
$15k–$25k	1.5%
$25k–$35k	2.7%
$35k–$50k	2.5%
$50k–$75k	5.7%
$75k–$100k	11.6%
$100k–$150k	18.1%
$150k–$200k	20.4%
$200k+	34.4%
Median income	$162,472

Housing

Home values

Under $50k 1.4%

$50k–$100k 1.0%

$100k–$150k 2.6%

$150k–$200k 1.7%

$200k–$300k 7.0%

$300k–$500k 20.3%

$500k–$1M 62.3%

$1M+ 3.7%

Housing overview

Metric	Value
Median home value	$592,200
Median rent / month	$2,233
Owner occupied	88.2%
Renter occupied	11.8%
Vacant	2.2%
Single-family detached	53.9%
Large apartment buildings	2.8%
Mobile homes	0.0%
Median rooms	7.2
Avg household size (owned)	3.23

Year built

Era	%
2020 or later	1.1%
2010–2019	46.2%
2000–2009	38.3%
1990–1999	2.2%
1980–1989	1.9%
1970–1979	4.3%
1960–1969	2.5%
1950–1959	2.1%
1940–1949	0.7%
1939 or earlier	0.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	2.1%
2 bedrooms	10.5%
3 bedrooms	33.7%
4 bedrooms	38.4%
5+ bedrooms	14.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	20.5%
2 vehicles	45.8%
3 or more	31.0%

Heating fuel

Fuel type	%
Utility gas	65.3%
Electricity	26.8%
Propane / LP gas	2.1%
Fuel oil	4.9%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	5,864	68.8%
Cohabiting couple	303	3.6%
Male householder, no spouse	592	6.9%
Female householder, no spouse	1,768	20.7%
Households with children under 18	4,513	52.9%
Households with seniors (65+)	1,597	18.7%
Average household size	3.21

Marital status

Status	Male	Female
Never married	26.6%	20.4%
Married	68.5%	61.0%
Separated	0.4%	0.7%
Widowed	0.4%	6.6%
Divorced	4.1%	11.3%

Education

Less than 9th grade 3.2%

Some HS, no diploma 1.9%

HS graduate 10.9%

Some college, no degree 10.9%

Associate's degree 6.7%

Bachelor's degree 36.2%

Graduate / professional 30.3%

Metric	%
HS diploma or higher	95.0%
Bachelor's or higher	66.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	449	5.8%
Kindergarten	534	6.9%
Elementary school	4,014	52.1%
High school	1,396	18.1%
College / grad school	1,314	17.0%

Employment

Industry of employment

Professional & management 24.2%

Education & healthcare 22.7%

Public administration 11.2%

Retail trade 7.7%

Finance & real estate 7.2%

Construction 6.1%

Manufacturing 6.1%

Arts, food & hospitality 4.5%

Other services 4.2%

Information 2.8%

Transportation & utilities 2.6%

Wholesale trade 0.4%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	65.9%
Service	9.8%
Sales & office	16.4%
Natural resources & construction	4.1%
Production & transportation	3.8%

Employment type

Type	%
Private sector	72.8%
Government	22.2%
Self-employed	4.4%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	67.1%
Carpool	7.3%
Public transit	2.1%
Walk	0.5%
Work from home	21.4%
Other means	1.5%
Avg commute (minutes)	34.2

Poverty

All people 4.1%

Under 18 years 3.8%

18 and over 4.2%

Married-couple families 1.1%

Female-led households 10.3%

Income support

Source	% of households
Social Security	16.0%
Retirement income	13.4%
Supplemental Security	2.8%
Cash public assistance	2.8%
Food stamps / SNAP	4.4%

Health indicators

Condition	%
Obesity	19.3%
High blood pressure	22.4%
High cholesterol	29.8%
Diabetes	6.2%
Heart disease	3.0%
Stroke	1.5%
Asthma	7.5%
Arthritis	13.7%
Kidney disease	1.6%
Pulmonary disease	2.8%
Cancer	4.2%

Behavior / access	%
Smoking	8.6%
Binge drinking	13.4%
No physical activity	14.3%
Less than 7 hrs sleep	30.6%
Depression	14.6%
Fair or poor health	6.8%
Poor mental health	10.9%
Poor physical health	5.0%
No health insurance	9.3%
Visited doctor (checkup)	70.2%
Visited dentist	71.7%
Cholesterol screening	93.1%
Teeth loss	5.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	821	4.3%

Disability	%
Any disability	6.5%
Under 18	2.0%
18–64 years	6.4%
65 and over	24.4%

Health insurance coverage

Type	%
Private insurance	84.8%
Public insurance	18.9%
No insurance	3.8%
Uninsured under 19	2.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	25,028	91.3%
Spanish	3,480	13.9%
Other Indo-European	526	2.1%
Asian & Pacific Islander	918	3.7%
Other languages	1,784	7.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	17,735	64.7%
Born in same state	17,381	63.4%
Born in different state	9,609	35.0%
Foreign born	354	1.3%
Naturalized citizen	9,685	35.3%
Not a US citizen	6,352	65.6%

Ancestry

Ancestry	Count	%
Italian	2,399	8.7%
French	1,460	5.3%
Arab	652	2.4%
English	143	0.5%

Ancestry	Count	%
German	132	0.5%
Irish	130	0.5%
Norwegian	85	0.3%
Polish	75	0.3%

Technology access

Metric	% of households
Computer access	31.1%
Internet access	99.3%

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

Frequently asked questions about ZIP code 20871

What city is ZIP code 20871 in?

ZIP code 20871 is primarily assigned to Clarksburg, Maryland.

What county is ZIP code 20871 in?

ZIP code 20871 falls within Montgomery County, Maryland.

How educated is the population of ZIP code 20871?

67% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 20871 family-oriented?

30% of residents in ZIP code 20871 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 20871 mostly owner-occupied?

88% of occupied units in ZIP code 20871 are owner-occupied, well above the national average.

What is the median household income in ZIP code 20871?

The median household income in ZIP code 20871 is $162,472, above the national median of ~$75,000.

What timezone is ZIP code 20871 in?

ZIP code 20871 observes the EST timezone.