In which county is ZIP code 21529 located?

ZIP 21529 is listed under Allegany, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21529: Ellerslie, MD

ZIP: 21529

County: Allegany

Coordinates: 39.70830, -78.77740

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Ellerslie, MD postal area 21529. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Ellerslie
ZIP Code	21529
County	Allegany
State	MD
Latitude / Longitude	39.70830, -78.77740
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 21529 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21529 is commonly represented around 39.70830, -78.77740. These coordinates help identify the general area within Allegany, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21529 for mail delivery and general location reference in Allegany, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Ellerslie within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21529?

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

In which county is 21529 located?

ZIP code 21529 is situated within Allegany, MD.

What are the coordinates for 21529?

The approximate center point is 39.70830 (Latitude) and -78.77740 (Longitude).

Is ZIP code 21529 active?

This page lists ZIP 21529 as Listed based on the latest refresh date shown above.

Does ZIP 21529 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