In which county is ZIP code 21740 located?

ZIP 21740 is listed under Washington, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21740: Hagerstown, MD

ZIP: 21740

County: Washington

Coordinates: 39.63200, -77.73720

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21740 in Hagerstown, MD. We include verified county details for Washington plus key geographic references used for mapping and logistics.

Primary City	Hagerstown
ZIP Code	21740
County	Washington
State	MD
Latitude / Longitude	39.63200, -77.73720
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 21740 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 21740 are listed as 39.63200 / -77.73720, useful for GPS and service checks in and around Hagerstown, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21740 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 21740?

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

In which county is 21740 located?

ZIP code 21740 is situated within Washington, MD.

What are the coordinates for 21740?

The approximate center point is 39.63200 (Latitude) and -77.73720 (Longitude).

Is ZIP code 21740 active?

This page lists ZIP 21740 as Listed based on the latest refresh date shown above.

Does ZIP 21740 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