ZIP Code 21528

21528 is one of Maryland's ZIP codes, delivering to addresses in Eckhart Mines, Allegany County.

City: Eckhart Mines
County: Allegany County
State: Maryland
Prefix: 215xx

Where this code sits

21528 is part of the 215xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Eckhart Mines.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21528 delivers to without sharing its boundary.

ZIP codes nearest 21528

The ZIP codes whose reference points sit closest to 21528.
ZIP code	Distance	Delivers to
ZIP code 21532	1.6 mi	Frostburg, MD
ZIP code 21543	2.9 mi	Midlothian, MD
ZIP code 21545	3.5 mi	Mount Savage, MD
ZIP code 21502	4.8 mi	Cumberland, MD
ZIP code 21542	5.0 mi	Midland, MD
ZIP code 21505	5.1 mi	Cumberland, MD
ZIP code 21524	6.0 mi	Corriganville, MD
ZIP code 15564	6.1 mi	Wellersburg, PA

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 21528, plotted from its record coordinates.

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

Scope ZIP code 21528. 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.