In which county is ZIP code 21742 located?

ZIP 21742 is listed under Washington, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21742: Hagerstown, MD

ZIP: 21742

County: Washington

Coordinates: 39.65730, -77.69210

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21742 in Hagerstown, MD. We include verified county details for Washington plus key geographic references used for mapping and logistics.

Primary City	Hagerstown
ZIP Code	21742
County	Washington
State	MD
Latitude / Longitude	39.65730, -77.69210
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 21742 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21742 is commonly represented around 39.65730, -77.69210. These coordinates help identify the general area within Washington, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21742 for mail delivery and general location reference in Washington, MD.

This ZIP may extend beyond the city core into nearby communities within Washington.

Related ZIP Codes (Nearby)

Explore other postal codes near Hagerstown within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21742?

The primary city for this ZIP code is Hagerstown, located in MD.

In which county is 21742 located?

ZIP code 21742 is situated within Washington, MD.

What are the coordinates for 21742?

The approximate center point is 39.65730 (Latitude) and -77.69210 (Longitude).

Is ZIP code 21742 active?

This page lists ZIP 21742 as Listed based on the latest refresh date shown above.

Does ZIP 21742 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08