ZIP Code 21756

21756 is one of Maryland's ZIP codes, delivering to addresses in Keedysville, Washington County.

City: Keedysville
County: Washington County
State: Maryland
Prefix: 217xx

Where this code sits

21756 is part of the 217xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Keedysville.

Keedysville Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21756 delivers to without sharing its boundary.

ZIP codes nearest 21756

The ZIP codes whose reference points sit closest to 21756.
ZIP code	Distance	Delivers to
ZIP code 21779	2.1 mi	Rohrersville, MD
ZIP code 21782	3.2 mi	Sharpsburg, MD
ZIP code 21715	5.2 mi	Brownsville, MD
ZIP code 21718	5.7 mi	Burkittsville, MD
ZIP code 21713	6.6 mi	Boonsboro, MD
ZIP code 25443	6.7 mi	Shepherdstown, WV
ZIP code 21746	7.6 mi	Hagerstown, MD
ZIP code 21769	7.8 mi	Middletown, 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 21756, plotted from its record coordinates.

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

Scope ZIP code 21756. 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.