20778 ZIP Code — West River, MD

Anne Arundel County, Maryland

ZIP code 20778 is located in West River, Maryland, within Anne Arundel County. It covers approximately 7.64 square miles and serves a population of 2,564 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 443/667/410.

About ZIP code 20778

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $600,400. Owner-occupancy is high at 97%, well above the national average.

Median household income is $178,854.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. An above-average commute of 40 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 26% of workers work from home.

Educational attainment is high — 51% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20778 reflects a community defined by a highly educated population, high homeownership, and a high rate of remote workers.

2,564

population

7.64

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20778 ZIP code map

Cities in ZIP code 20778

Below are the cities the US Postal Service accepts for ZIP code 20778. Using any city not on this list may result in mail delivery delays.

City	Status
West River	Preferred

Nearby ZIP codes

20776 Harwood (2.8 mi) 20764 Shady Side (3.3 mi) 20733 Churchton (3.3 mi) 20751 Deale (3.3 mi) 20711 Lothian (4.8 mi) 20779 Tracys Landing (5.5 mi) 21037 Edgewater (5.8 mi) 20758 Friendship (7.2 mi) 21140 Riva (7.6 mi) 21035 Davidsonville (7.6 mi) 21403 Annapolis (8.2 mi) 20754 Dunkirk (8.4 mi)

Demographics updated 06/2026

Population
Total population	2,564
Population density	336 / sq mi
State FIPS	24
County FIPS	003

Geography
Land area	7.64 sq mi
Water area	0.75 sq mi
Latitude	38.8410
Longitude	-76.5714
Timezone	Eastern (ET)
Area code	443/667/410

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	5.7%	20.1%	28.2%
$50k – $100k	22.9%	27.4%	28.2%
$100k – $200k	46.1%	36.3%	30.1%
Over $200k	25.3%	16.2%	13.4%

Demographics & statistics

2,564

Population

336

People per sq mi

47.1

Median age

$178,854

Median household income

$68,453

Per capita income

$600,400

Median home value

Median monthly rent

97.2%

Home ownership

0.9%

Poverty rate

3.5%

Unemployment

835

Housing units

50.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

161

15–19

173

20–24

101

25–34

109

120

35–44

129

195

45–54

209

162

55–59

173

60–64

138

65–74

148

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	521	20.3%
18 and over	2,043	79.7%
65 and over	414	16.1%
Median age	47.1 years

Race & ethnicity

White 91.2%

Two or more races 4.6%

Hispanic or Latino 3.6%

Black or African American 0.6%

Group	Count	%
White	2,426	91.2%
Two or more races	122	4.6%
Hispanic or Latino	97	3.6%
Black or African American	16	0.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	5.7%	20.1%	28.2%
$50k – $100k	22.9%	27.4%	28.2%
$100k – $200k	46.1%	36.3%	30.1%
Over $200k	25.3%	16.2%	13.4%

Under $10k 2.1%

$10k–$15k 3.8%

$15k–$25k 1.4%

$75k–$100k 8.0%

$100k–$150k 12.1%

$150k–$200k 45.2%

$200k+ 27.4%

Range	% of households
Under $10k	2.1%
$10k–$15k	3.8%
$15k–$25k	1.4%
$75k–$100k	8.0%
$100k–$150k	12.1%
$150k–$200k	45.2%
$200k+	27.4%
Median income	$178,854

Housing

Home values

Under $50k 3.1%

$150k–$200k 2.0%

$200k–$300k 4.3%

$300k–$500k 30.5%

$500k–$1M 46.2%

$1M+ 13.8%

Housing overview

Metric	Value
Median home value	$600,400
Median rent / month	$0
Owner occupied	97.2%
Renter occupied	2.8%
Vacant	0.0%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	7.2
Avg household size (owned)	2.89

Year built

Era	%
2020 or later	0.0%
2010–2019	1.9%
2000–2009	7.1%
1990–1999	42.1%
1980–1989	12.1%
1970–1979	10.2%
1960–1969	7.3%
1950–1959	3.7%
1940–1949	1.6%
1939 or earlier	13.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	2.8%
3 bedrooms	59.6%
4 bedrooms	25.1%
5+ bedrooms	12.5%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	16.9%
2 vehicles	29.5%
3 or more	53.7%

Heating fuel

Fuel type	%
Utility gas	4.1%
Electricity	65.8%
Propane / LP gas	6.4%
Fuel oil	18.9%
Wood	4.9%

Households & families

Household type	Count	%
Married-couple family	601	70.0%
Cohabiting couple	41	4.8%
Male householder, no spouse	117	13.6%
Female householder, no spouse	100	11.6%
Households with children under 18	325	37.8%
Households with seniors (65+)	294	34.2%
Average household size	2.98

Marital status

Status	Male	Female
Never married	19.2%	32.4%
Married	67.6%	60.6%
Separated	1.4%	0.0%
Widowed	1.6%	3.0%
Divorced	10.2%	4.1%

Education

Less than 9th grade 0.1%

Some HS, no diploma 1.1%

HS graduate 22.8%

Some college, no degree 19.4%

Associate's degree 6.0%

Bachelor's degree 23.6%

Graduate / professional 27.0%

Metric	%
HS diploma or higher	98.8%
Bachelor's or higher	50.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	295	39.7%
High school	110	14.8%
College / grad school	338	45.5%

Employment

Industry of employment

Professional & management 26.0%

Arts, food & hospitality 18.9%

Education & healthcare 16.8%

Public administration 16.2%

Other services 5.1%

Manufacturing 4.9%

Construction 4.4%

Retail trade 4.1%

Finance & real estate 2.5%

Transportation & utilities 1.0%

Occupation

Category	%
Management, business & arts	48.8%
Service	15.7%
Sales & office	28.2%
Natural resources & construction	4.8%
Production & transportation	2.4%

Employment type

Type	%
Private sector	72.9%
Government	22.1%
Self-employed	5.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	68.3%
Carpool	3.6%
Public transit	0.0%
Walk	2.3%
Work from home	25.8%
Other means	0.0%
Avg commute (minutes)	40.3

Poverty

All people 0.9%

Under 18 years 0.0%

18 and over 1.1%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	28.1%
Retirement income	28.1%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	32.4%
High blood pressure	34.1%
High cholesterol	35.8%
Diabetes	9.0%
Heart disease	5.7%
Stroke	2.5%
Asthma	8.8%
Arthritis	25.4%
Kidney disease	2.5%
Pulmonary disease	5.6%
Cancer	7.0%

Behavior / access	%
Smoking	13.7%
Binge drinking	16.3%
No physical activity	18.8%
Less than 7 hrs sleep	32.5%
Depression	19.4%
Fair or poor health	10.4%
Poor mental health	12.9%
Poor physical health	8.7%
No health insurance	8.1%
Visited doctor (checkup)	76.2%
Visited dentist	72.3%
Cholesterol screening	94.0%
Teeth loss	7.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	68	3.4%

Disability	%
Any disability	10.4%
Under 18	4.0%
18–64 years	5.6%
65 and over	37.0%

Health insurance coverage

Type	%
Private insurance	92.2%
Public insurance	15.9%
No insurance	1.9%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,468	96.3%
Spanish	82	3.3%
Other Indo-European	82	3.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,404	93.8%
Born in same state	2,391	93.3%
Born in different state	1,533	59.8%
Foreign born	13	0.5%
Naturalized citizen	160	6.2%
Not a US citizen	160	100.0%

Ancestry

Ancestry	Count	%
Italian	443	17.3%
French	243	9.5%
Polish	56	2.2%

Ancestry	Count	%
English	20	0.8%
Arab	17	0.7%
Dutch	13	0.5%

Technology access

Metric	% of households
Computer access	33.5%
Internet access	95.9%

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

Frequently asked questions about ZIP code 20778

What city is ZIP code 20778 in?

ZIP code 20778 is primarily assigned to West River, Maryland.

What county is ZIP code 20778 in?

ZIP code 20778 falls within Anne Arundel County, Maryland.

Is ZIP code 20778 mostly owner-occupied?

97% of occupied units in ZIP code 20778 are owner-occupied, well above the national average.

How educated is the population of ZIP code 20778?

51% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 20778?

The median household income in ZIP code 20778 is $178,854, above the national median of ~$75,000.

What is the typical home value in ZIP code 20778?

The median home value in ZIP code 20778 is $600,400.

What timezone is ZIP code 20778 in?

ZIP code 20778 observes the EST timezone.