ZIP Code 21140

21140 is one of Maryland's ZIP codes, delivering to addresses in Riva, Anne Arundel County.

City: Riva
County: Anne Arundel County
State: Maryland
Prefix: 211xx

Where this code sits

21140 is part of the 211xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Riva.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21140 delivers to without sharing its boundary.

ZIP codes nearest 21140

The ZIP codes whose reference points sit closest to 21140.
ZIP code	Distance	Delivers to
ZIP code 21062	1.7 mi	Glen Burnie, MD
ZIP code 21123	1.7 mi	Pasadena, MD
ZIP code 21411	1.7 mi	Annapolis, MD
ZIP code 21412	1.7 mi	Annapolis, MD
ZIP code 21035	2.9 mi	Davidsonville, MD
ZIP code 21401	3.3 mi	Annapolis, MD
ZIP code 21037	3.4 mi	Edgewater, MD
ZIP code 21403	5.1 mi	Annapolis, 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 21140, plotted from its record coordinates.

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

Scope ZIP code 21140. 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.