In which county is ZIP code 21777 located?

ZIP 21777 is listed under Frederick, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21777: Point Of Rocks, MD

ZIP: 21777

County: Frederick

Coordinates: 39.27910, -77.53280

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 21777, serving Point Of Rocks in MD. It lies in Frederick and supports delivery, planning, and address verification.

Primary City	Point Of Rocks
ZIP Code	21777
County	Frederick
State	MD
Latitude / Longitude	39.27910, -77.53280
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 21777 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 21777 is approximately 39.27910 (latitude) and -77.53280 (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 21777 for mail delivery and general location reference in Frederick, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Point Of Rocks within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21777?

The primary city for this ZIP code is Point Of Rocks, located in MD.

In which county is 21777 located?

ZIP code 21777 is situated within Frederick, MD.

What are the coordinates for 21777?

The approximate center point is 39.27910 (Latitude) and -77.53280 (Longitude).

Is ZIP code 21777 active?

This page lists ZIP 21777 as Listed based on the latest refresh date shown above.

Does ZIP 21777 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