20905 ZIP Code — Silver Spring, MD

Montgomery County, Maryland

ZIP code 20905 is located in Silver Spring, Maryland, within Montgomery County. It covers approximately 11.79 square miles and serves a population of 17,451 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301.

About ZIP code 20905

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $617,800. Owner-occupancy is high at 87%, well above the national average.

The gap between median ($142,929) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 33 minutes is near the national average. Remote work is prevalent — 25% of workers work from home.

Educational attainment is high — 55% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20905 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

17,451

population

11.79

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20905 ZIP code map

Cities in ZIP code 20905

Below are the cities the US Postal Service accepts for ZIP code 20905. Using any city not on this list may result in mail delivery delays.

City	Status
Silver Spring	Acceptable
Silver Spring	Acceptable
Silver Spring	Preferred

Nearby ZIP codes

20868 Spencerville (1.5 mi) 20868 Spencerville (1.5 mi) 20861 Ashton (2.6 mi) 20861 Ashton (2.6 mi) 20860 Sandy Spring (3.3 mi) 20860 Sandy Spring (3.3 mi) 20904 Silver Spring (3.6 mi) 20904 Silver Spring (3.6 mi) 20866 Burtonsville (3.7 mi) 20866 Burtonsville (3.7 mi) 20897 Suburb Maryland Fac (3.8 mi) 20897 Suburb Maryland Fac (3.8 mi)

Demographics updated 05/2026

Population
Total population	17,451
Population density	1,480 / sq mi
State FIPS	24
County FIPS	031

Geography
Land area	11.79 sq mi
Water area	0.10 sq mi
Latitude	39.1118
Longitude	-76.9936
Timezone	Eastern (ET)
Area code	301

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.0%	20.6%	28.2%
$50k – $100k	21.6%	24.2%	28.2%
$100k – $200k	35.8%	31.9%	30.1%
Over $200k	26.5%	23.3%	13.4%

Demographics & statistics

17,451

Population

1,480

People per sq mi

41.6

Median age

$142,929

Median household income

$54,171

Per capita income

$617,800

Median home value

$1,785

Median monthly rent

87.3%

Home ownership

3.8%

Poverty rate

5.7%

Unemployment

5,014

Housing units

54.7%

Bachelor's or higher

Age distribution

Male Female

473

Under 5

493

556

5–9

580

409

10–14

427

629

15–19

656

499

20–24

520

849

25–34

885

1,147

35–44

1,197

1,081

45–54

1,127

658

55–59

686

659

60–64

687

945

65–74

986

515

75–84

537

122

85+

128

← Male

Female →

Age summary

Group	Count	%
Under 18	3,706	21.2%
18 and over	13,745	78.8%
65 and over	3,233	18.5%
Median age	41.6 years

Race & ethnicity

White 38.1%

Black or African American 21.2%

Hispanic or Latino 12.4%

Asian 11.9%

Other race 8.9%

Two or more races 7.5%

Group	Count	%
White	7,589	38.1%
Black or African American	4,215	21.2%
Hispanic or Latino	2,467	12.4%
Asian	2,371	11.9%
Other race	1,780	8.9%
Two or more races	1,496	7.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.0%	20.6%	28.2%
$50k – $100k	21.6%	24.2%	28.2%
$100k – $200k	35.8%	31.9%	30.1%
Over $200k	26.5%	23.3%	13.4%

Under $10k 2.0%

$10k–$15k 0.7%

$15k–$25k 1.7%

$25k–$35k 2.0%

$35k–$50k 3.3%

$50k–$75k 13.9%

$75k–$100k 8.6%

$100k–$150k 20.9%

$150k–$200k 16.6%

$200k+ 30.5%

Range	% of households
Under $10k	2.0%
$10k–$15k	0.7%
$15k–$25k	1.7%
$25k–$35k	2.0%
$35k–$50k	3.3%
$50k–$75k	13.9%
$75k–$100k	8.6%
$100k–$150k	20.9%
$150k–$200k	16.6%
$200k+	30.5%
Median income	$142,929

Housing

Home values

Under $50k 0.8%

$50k–$100k 0.7%

$100k–$150k 0.7%

$150k–$200k 0.4%

$200k–$300k 1.8%

$300k–$500k 16.8%

$500k–$1M 76.2%

$1M+ 2.7%

Housing overview

Metric	Value
Median home value	$617,800
Median rent / month	$1,785
Owner occupied	87.3%
Renter occupied	12.7%
Vacant	4.7%
Single-family detached	85.5%
Large apartment buildings	0.0%
Mobile homes	0.1%
Median rooms	8.3
Avg household size (owned)	3.14

Year built

Era	%
2020 or later	0.0%
2010–2019	0.5%
2000–2009	4.6%
1990–1999	6.9%
1980–1989	42.2%
1970–1979	25.5%
1960–1969	13.8%
1950–1959	3.0%
1940–1949	2.0%
1939 or earlier	1.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	1.2%
2 bedrooms	6.1%
3 bedrooms	21.6%
4 bedrooms	50.0%
5+ bedrooms	20.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.8%
1 vehicle	14.3%
2 vehicles	44.4%
3 or more	40.4%

Heating fuel

Fuel type	%
Utility gas	45.8%
Electricity	37.5%
Propane / LP gas	1.9%
Fuel oil	12.0%
Wood	0.5%
Solar	1.3%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	4,016	73.9%
Cohabiting couple	91	1.7%
Male householder, no spouse	408	7.5%
Female householder, no spouse	923	17.0%
Households with children under 18	2,057	37.8%
Households with seniors (65+)	2,158	39.7%
Average household size	3.20

Marital status

Status	Male	Female
Never married	30.2%	25.6%
Married	61.1%	56.7%
Separated	1.4%	1.4%
Widowed	0.8%	5.6%
Divorced	6.5%	10.8%

Education

Less than 9th grade 3.2%

Some HS, no diploma 2.4%

HS graduate 15.0%

Some college, no degree 14.9%

Associate's degree 9.9%

Bachelor's degree 29.1%

Graduate / professional 25.6%

Metric	%
HS diploma or higher	94.4%
Bachelor's or higher	54.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	442	9.4%
Kindergarten	309	6.6%
Elementary school	1,455	31.0%
High school	1,027	21.9%
College / grad school	1,465	31.2%

Employment

Industry of employment

Education & healthcare 26.9%

Professional & management 18.1%

Public administration 10.2%

Construction 8.4%

Arts, food & hospitality 7.3%

Retail trade 6.7%

Other services 6.2%

Finance & real estate 5.8%

Manufacturing 3.8%

Transportation & utilities 3.1%

Information 1.5%

Wholesale trade 1.2%

Agriculture & mining 0.7%

Occupation

Category	%
Management, business & arts	53.7%
Service	17.0%
Sales & office	14.9%
Natural resources & construction	7.0%
Production & transportation	7.4%

Employment type

Type	%
Private sector	70.7%
Government	21.6%
Self-employed	7.6%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	61.9%
Carpool	7.1%
Public transit	4.8%
Walk	0.1%
Work from home	24.6%
Other means	1.4%
Avg commute (minutes)	32.9

Poverty

All people 3.8%

Under 18 years 6.4%

18 and over 3.1%

Married-couple families 1.3%

Female-led households 18.9%

Income support

Source	% of households
Social Security	33.8%
Retirement income	26.4%
Supplemental Security	2.9%
Cash public assistance	1.7%
Food stamps / SNAP	7.4%

Health indicators

Condition	%
Obesity	21.1%
High blood pressure	30.2%
High cholesterol	35.2%
Diabetes	9.0%
Heart disease	4.9%
Stroke	2.4%
Asthma	8.1%
Arthritis	19.6%
Kidney disease	2.4%
Pulmonary disease	4.1%
Cancer	6.1%

Behavior / access	%
Smoking	8.5%
Binge drinking	11.7%
No physical activity	16.4%
Less than 7 hrs sleep	29.9%
Depression	14.6%
Fair or poor health	9.1%
Poor mental health	10.6%
Poor physical health	6.4%
No health insurance	9.7%
Visited doctor (checkup)	74.7%
Visited dentist	71.2%
Cholesterol screening	94.2%
Teeth loss	6.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	647	4.7%

Disability	%
Any disability	7.5%
Under 18	3.1%
18–64 years	5.4%
65 and over	19.3%

Health insurance coverage

Type	%
Private insurance	78.9%
Public insurance	31.2%
No insurance	3.6%
Uninsured under 19	2.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	16,485	94.5%
Spanish	1,963	11.9%
Other Indo-European	561	3.4%
Asian & Pacific Islander	716	4.3%
Other languages	444	2.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	12,154	69.6%
Born in same state	11,909	68.2%
Born in different state	5,727	32.8%
Foreign born	245	1.4%
Naturalized citizen	5,297	30.4%
Not a US citizen	3,297	62.2%

Ancestry

Ancestry	Count	%
Italian	1,687	9.7%
French	869	5%
Arab	776	4.4%
English	97	0.6%
Irish	90	0.5%

Ancestry	Count	%
Norwegian	48	0.3%
Polish	44	0.3%
Dutch	30	0.2%
German	24	0.1%

Technology access

Metric	% of households
Computer access	31.2%
Internet access	98.2%

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

Frequently asked questions about ZIP code 20905

What city is ZIP code 20905 in?

ZIP code 20905 is primarily assigned to Silver Spring, Maryland.

What county is ZIP code 20905 in?

ZIP code 20905 falls within Montgomery County, Maryland.

How educated is the population of ZIP code 20905?

55% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 20905 mostly owner-occupied?

87% of occupied units in ZIP code 20905 are owner-occupied, well above the national average.

What is the median household income in ZIP code 20905?

The median household income in ZIP code 20905 is $142,929, above the national median of ~$75,000.

What is the typical home value in ZIP code 20905?

The median home value in ZIP code 20905 is $617,800.

What timezone is ZIP code 20905 in?

ZIP code 20905 observes the EST timezone.