ZIP Code 21631

21631 is one of Maryland's ZIP codes, delivering to addresses in East New Market, Dorchester County.

City: East New Market
County: Dorchester County
State: Maryland
Prefix: 216xx

Where this code sits

21631 is part of the 216xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to East New Market.

East New Market Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21631 delivers to without sharing its boundary.

ZIP codes nearest 21631

The ZIP codes whose reference points sit closest to 21631.
ZIP code	Distance	Delivers to
ZIP code 21664	1.3 mi	Secretary, MD
ZIP code 21835	3.6 mi	Linkwood, MD
ZIP code 21643	6.2 mi	Hurlock, MD
ZIP code 21673	7.1 mi	Trappe, MD
ZIP code 21613	7.3 mi	Cambridge, MD
ZIP code 21869	9.1 mi	Vienna, MD
ZIP code 21659	9.9 mi	Rhodesdale, MD
ZIP code 21609	10 mi	Bethlehem, 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 21631, plotted from its record coordinates.

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

Scope ZIP code 21631. 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.