ZIP Code 21561

21561 is one of Maryland's ZIP codes, delivering to addresses in Swanton, Garrett County.

City: Swanton
County: Garrett County
State: Maryland
Prefix: 215xx

Where this code sits

21561 is part of the 215xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Swanton.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21561 delivers to without sharing its boundary.

ZIP codes nearest 21561

The ZIP codes whose reference points sit closest to 21561.
ZIP code	Distance	Delivers to
ZIP code 21538	4.2 mi	Kitzmiller, MD
ZIP code 21550	5.0 mi	Oakland, MD
ZIP code 21523	8.4 mi	Bloomington, MD
ZIP code 21522	8.7 mi	Bittinger, MD
ZIP code 26717	9.1 mi	Elk Garden, WV
ZIP code 21540	9.6 mi	Luke, MD
ZIP code 21541	9.8 mi	Mc Henry, MD
ZIP code 26750	10 mi	Piedmont, WV

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 21561, plotted from its record coordinates.

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

Scope ZIP code 21561. 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.