In which county is ZIP code 21539 located?

ZIP 21539 is listed under Allegany, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21539: Lonaconing, MD

ZIP: 21539

County: Allegany

Coordinates: 39.57570, -78.99150

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21539 in Lonaconing, MD. We include verified county details for Allegany plus key geographic references used for mapping and logistics.

Primary City	Lonaconing
ZIP Code	21539
County	Allegany
State	MD
Latitude / Longitude	39.57570, -78.99150
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 21539 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21539 is commonly represented around 39.57570, -78.99150. These coordinates help identify the general area within Allegany, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21539 for mail delivery and general location reference in Allegany, MD.

Some addresses near Lonaconing may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Lonaconing within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21539?

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

In which county is 21539 located?

ZIP code 21539 is situated within Allegany, MD.

What are the coordinates for 21539?

The approximate center point is 39.57570 (Latitude) and -78.99150 (Longitude).

Is ZIP code 21539 active?

This page lists ZIP 21539 as Listed based on the latest refresh date shown above.

Does ZIP 21539 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