ZIP Code 21530

21530 is one of Maryland's ZIP codes, delivering to addresses in Flintstone, Allegany County.

City: Flintstone
County: Allegany County
State: Maryland
Prefix: 215xx

Where this code sits

21530 is part of the 215xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Flintstone.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21530 delivers to without sharing its boundary.

ZIP codes nearest 21530

The ZIP codes whose reference points sit closest to 21530.
ZIP code	Distance	Delivers to
ZIP code 21555	8.1 mi	Oldtown, MD
ZIP code 17211	9.9 mi	Artemas, PA
ZIP code 21504	10 mi	Cumberland, MD
ZIP code 21766	10 mi	Little Orleans, MD
ZIP code 21501	11 mi	Cumberland, MD
ZIP code 21503	11 mi	Cumberland, MD
ZIP code 21529	11 mi	Ellerslie, MD
ZIP code 15545	11 mi	Hyndman, 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 21530, plotted from its record coordinates.

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

Scope ZIP code 21530. 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.