ZIP Code 21742

21742 is one of Maryland's ZIP codes, delivering to addresses in Hagerstown, Washington County.

City

Hagerstown

County

Washington County

State

Maryland

Prefix

217xx

Where this code sits

21742 is part of the 217xx range, the group of codes handled by one mail processing centre. Hagerstown is served by 6 ZIP codes in total; the full list, with the county each falls in, is on the Hagerstown page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21742 delivers to without sharing its boundary.

ZIP codes nearest 21742

The ZIP codes whose reference points sit closest to 21742.
ZIP code	Distance	Delivers to
ZIP code 21741	1.8 mi	Hagerstown, MD
ZIP code 21747	1.8 mi	Hagerstown, MD
ZIP code 21749	1.8 mi	Hagerstown, MD
ZIP code 21740	3.0 mi	Hagerstown, MD
ZIP code 21721	3.1 mi	Chewsville, MD
ZIP code 21734	3.4 mi	Funkstown, MD
ZIP code 21767	4.2 mi	Maugansville, MD
ZIP code 17263	4.9 mi	State Line, 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 21742, plotted from its record coordinates.

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

Scope ZIP code 21742. 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.