ZIP Code 21842

21842 is one of Maryland's ZIP codes, delivering to addresses in Ocean City, Worcester County.

City: Ocean City
County: Worcester County
State: Maryland
Prefix: 218xx

Where this code sits

21842 is part of the 218xx range, the group of codes handled by one mail processing centre. Ocean City is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Ocean City page.

Ocean City Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21842 delivers to without sharing its boundary.

ZIP codes nearest 21842

The ZIP codes whose reference points sit closest to 21842.
ZIP code	Distance	Delivers to
ZIP code 21843	0.0 mi	Ocean City, MD
ZIP code 21811	5.6 mi	Berlin, MD
ZIP code 21862	8.4 mi	Showell, MD
ZIP code 21813	8.4 mi	Bishopville, MD
ZIP code 19975	9.7 mi	Selbyville, DE
ZIP code 19944	11 mi	Fenwick Island, DE
ZIP code 21872	12 mi	Whaleyville, MD
ZIP code 21841	13 mi	Newark, 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 21842, plotted from its record coordinates.

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

Scope ZIP code 21842. 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.