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Zip Code 20778 — West River, MD

20778 is a ZIP Code associated with West River, MD, located within Anne Arundel. The postal region supports an estimated population of 2,211 residents across Data Pending housing units, with a population density of 111.7 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.837330, -76.566470)

Data Metric	Local Statistic
Postal / Zip Code	20778
Primary City	West River
State / Province	MD
County	Anne Arundel
Total Population	2,211
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	111.7 people/sq mi
Timezone	America/New_York

How 20778 Compares

Metric	ZIP 20778	Anne Arundel County	MD State Average
Population	2,211	611,016	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	111.7 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 20765	Galesville	1.2 mi	668	N/A
Zip 20733	Churchton	2.9 mi	2,669	N/A
Zip 20751	Deale	2.9 mi	2,851	N/A
Zip 20764	Shady Side	3.0 mi	2,993	N/A
Zip 20776	Harwood	3.1 mi	3,315	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →