20880 ZIP Code — Washington Grove, MD

Montgomery County, Maryland

ZIP code 20880 is located in Washington Grove, Maryland, within Montgomery County. It covers approximately 0.33 square miles and serves a population of 604 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301/240.

About ZIP code 20880

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $569,100. Owner-occupancy is high at 95%, well above the national average.

Median household income is $131,528. The poverty rate of 3% is below the national average. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. The average commute of 29 minutes is near the national average. Remote work is prevalent — 20% of workers work from home.

Educational attainment is high — 69% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20880 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

604

population

0.33

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20880 ZIP code map

Cities in ZIP code 20880

Below are the cities the US Postal Service accepts for ZIP code 20880. Using any city not on this list may result in mail delivery delays.

City	Status
Washington Grove	Acceptable

Demographics updated 05/2026

Population
Total population	604
Population density	1,830 / sq mi
State FIPS	24
County FIPS	031

Geography
Land area	0.33 sq mi
Water area	0.00 sq mi
Latitude	39.1392
Longitude	-77.1743
Timezone	Eastern (ET)
Area code	301/240

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.5%	20.6%	28.2%
$50k – $100k	26.4%	24.2%	28.2%
$100k – $200k	39.1%	31.9%	30.1%
Over $200k	23.0%	23.3%	13.4%

Demographics & statistics

604

Population

1,830

People per sq mi

58.1

Median age

$131,528

Median household income

$78,629

Per capita income

$569,100

Median home value

Median monthly rent

95.4%

Home ownership

3.3%

Poverty rate

2.6%

Unemployment

296

Housing units

68.9%

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	62	10.3%
18 and over	542	89.7%
65 and over	183	30.3%
Median age	58.1 years

Race & ethnicity

White 73.8%

Black or African American 12%

Hispanic or Latino 4.6%

Two or more races 3.8%

Other race 3.5%

Asian 2.4%

Group	Count	%
White	467	73.8%
Black or African American	76	12%
Hispanic or Latino	29	4.6%
Two or more races	24	3.8%
Other race	22	3.5%
Asian	15	2.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.5%	20.6%	28.2%
$50k – $100k	26.4%	24.2%	28.2%
$100k – $200k	39.1%	31.9%	30.1%
Over $200k	23.0%	23.3%	13.4%

Under $10k 1.4%

$15k–$25k 2.5%

$25k–$35k 0.7%

$35k–$50k 4.2%

$50k–$75k 5.6%

$75k–$100k 8.4%

$100k–$150k 32.3%

$150k–$200k 17.9%

$200k+ 27.0%

Range	% of households
Under $10k	1.4%
$15k–$25k	2.5%
$25k–$35k	0.7%
$35k–$50k	4.2%
$50k–$75k	5.6%
$75k–$100k	8.4%
$100k–$150k	32.3%
$150k–$200k	17.9%
$200k+	27.0%
Median income	$131,528

Housing

Home values

Under $50k 0.7%

$50k–$100k 0.7%

$200k–$300k 5.5%

$300k–$500k 28.7%

$500k–$1M 63.6%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$569,100
Median rent / month	$0
Owner occupied	95.4%
Renter occupied	4.6%
Vacant	7.8%
Single-family detached	99.4%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	7.9
Avg household size (owned)	2.02

Year built

Era	%
2020 or later	0.0%
2010–2019	2.6%
2000–2009	2.3%
1990–1999	7.8%
1980–1989	0.0%
1970–1979	1.3%
1960–1969	12.6%
1950–1959	29.8%
1940–1949	7.8%
1939 or earlier	35.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.2%
2 bedrooms	12.0%
3 bedrooms	48.5%
4 bedrooms	22.7%
5+ bedrooms	12.6%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	52.3%
2 vehicles	32.3%
3 or more	14.0%

Heating fuel

Fuel type	%
Utility gas	6.0%
Electricity	44.2%
Propane / LP gas	9.5%
Fuel oil	34.7%
Wood	4.6%

Households & families

Household type	Count	%
Married-couple family	115	40.4%
Cohabiting couple	5	1.8%
Male householder, no spouse	109	38.2%
Female householder, no spouse	56	19.6%
Households with children under 18	43	15.1%
Households with seniors (65+)	120	42.1%
Average household size	2.12

Marital status

Status	Male	Female
Never married	26.5%	32.7%
Married	38.9%	53.5%
Separated	0.0%	0.0%
Widowed	6.3%	7.1%
Divorced	28.3%	6.6%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.4%

HS graduate 15.0%

Some college, no degree 13.2%

Associate's degree 2.4%

Bachelor's degree 35.9%

Graduate / professional 33.1%

Metric	%
HS diploma or higher	99.6%
Bachelor's or higher	68.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	2	3.0%
Kindergarten	6	9.0%
Elementary school	19	28.4%
High school	16	23.9%
College / grad school	24	35.8%

Employment

Industry of employment

Construction 27.0%

Professional & management 19.0%

Public administration 14.3%

Education & healthcare 11.6%

Arts, food & hospitality 8.5%

Retail trade 4.5%

Manufacturing 4.2%

Other services 3.7%

Finance & real estate 3.2%

Information 2.6%

Transportation & utilities 1.3%

Occupation

Category	%
Management, business & arts	72.8%
Service	6.9%
Sales & office	6.9%
Natural resources & construction	9.0%
Production & transportation	4.5%

Employment type

Type	%
Private sector	66.1%
Government	25.1%
Self-employed	8.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	53.4%
Carpool	7.0%
Public transit	18.6%
Walk	0.5%
Work from home	20.2%
Other means	0.3%
Avg commute (minutes)	29.2

Poverty

All people 3.3%

Under 18 years 0.0%

18 and over 3.7%

Married-couple families 2.6%

Female-led households 0.0%

Income support

Source	% of households
Social Security	37.9%
Retirement income	30.9%
Supplemental Security	1.1%
Cash public assistance	0.0%
Food stamps / SNAP	0.4%

Health indicators

Condition	%
Obesity	20.8%
High blood pressure	31.7%
High cholesterol	39.9%
Diabetes	8.5%
Heart disease	6.0%
Stroke	2.6%
Asthma	8.2%
Arthritis	24.0%
Kidney disease	2.7%
Pulmonary disease	5.5%
Cancer	8.1%

Behavior / access	%
Smoking	9.3%
Binge drinking	12.0%
No physical activity	15.3%
Less than 7 hrs sleep	27.1%
Depression	16.7%
Fair or poor health	9.3%
Poor mental health	10.5%
Poor physical health	7.4%
No health insurance	7.7%
Visited doctor (checkup)	75.1%
Visited dentist	73.9%
Cholesterol screening	95.6%
Teeth loss	6.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	40	7.4%

Disability	%
Any disability	10.3%
Under 18	0.0%
18–64 years	5.6%
65 and over	23.0%

Health insurance coverage

Type	%
Private insurance	89.7%
Public insurance	31.3%
No insurance	3.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	583	96.5%
Spanish	7	1.2%
Other Indo-European	3	0.5%
Asian & Pacific Islander	4	0.7%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	518	85.8%
Born in same state	514	85.1%
Born in different state	192	31.8%
Foreign born	4	0.7%
Naturalized citizen	86	14.2%
Not a US citizen	74	86.0%

Ancestry

Ancestry	Count	%
French	69	11.4%
Italian	56	9.3%
German	17	2.8%
Norwegian	10	1.7%
Arab	6	1%

Ancestry	Count	%
Polish	5	0.8%
Dutch	5	0.8%
Irish	2	0.3%
English	1	0.2%

Technology access

Metric	% of households
Computer access	47.2%
Internet access	98.6%

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

Frequently asked questions about ZIP code 20880

What city is ZIP code 20880 in?

ZIP code 20880 is primarily assigned to Washington Grove, Maryland.

What county is ZIP code 20880 in?

ZIP code 20880 falls within Montgomery County, Maryland.

How educated is the population of ZIP code 20880?

69% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 20880 mostly owner-occupied?

95% of occupied units in ZIP code 20880 are owner-occupied, well above the national average.

Does ZIP code 20880 have an older population?

30% of residents in ZIP code 20880 are 65 or older, above the national average of ~17%.

Does ZIP code 20880 have a large retiree population?

38% of households in ZIP code 20880 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 20880 in?

ZIP code 20880 observes the EST timezone.