In which county is ZIP code 21792 located?

ZIP 21792 is listed under Frederick, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21792: Unionville, MD

ZIP: 21792

County: Frederick

Coordinates: 39.47480, -77.18550

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Unionville, MD postal area 21792. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Unionville
ZIP Code	21792
County	Frederick
State	MD
Latitude / Longitude	39.47480, -77.18550
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 21792 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 21792 is approximately 39.47480 (latitude) and -77.18550 (longitude). This location sits within Frederick, contributing to regional planning across MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21792 for mail delivery and general location reference in Frederick, MD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Unionville.

Related ZIP Codes (Nearby)

Explore other postal codes near Unionville within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21792?

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

In which county is 21792 located?

ZIP code 21792 is situated within Frederick, MD.

What are the coordinates for 21792?

The approximate center point is 39.47480 (Latitude) and -77.18550 (Longitude).

Is ZIP code 21792 active?

This page lists ZIP 21792 as Listed based on the latest refresh date shown above.

Does ZIP 21792 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