ZIP Code 20778

20778 is one of Maryland's ZIP codes, delivering to addresses in West River, Anne Arundel County.

City: West River
County: Anne Arundel County
State: Maryland
Prefix: 207xx

Where this code sits

20778 is part of the 207xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to West River.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20778 delivers to without sharing its boundary.

ZIP codes nearest 20778

The ZIP codes whose reference points sit closest to 20778.
ZIP code	Distance	Delivers to
ZIP code 20765	1.4 mi	Galesville, MD
ZIP code 20764	1.7 mi	Shady Side, MD
ZIP code 20733	1.8 mi	Churchton, MD
ZIP code 20751	3.0 mi	Deale, MD
ZIP code 20779	4.5 mi	Tracys Landing, MD
ZIP code 21106	4.6 mi	Mayo, MD
ZIP code 20776	4.7 mi	Harwood, MD
ZIP code 21037	6.2 mi	Edgewater, MD

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 20778, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 20778. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.