In which county is ZIP code 21709 located?

ZIP 21709 is listed under Frederick, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21709: Frederick, MD

ZIP: 21709

County: Frederick

Coordinates: 39.47000, -77.39210

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Frederick, MD postal area 21709. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Frederick
ZIP Code	21709
County	Frederick
State	MD
Latitude / Longitude	39.47000, -77.39210
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 21709 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21709 is commonly represented around 39.47000, -77.39210. These coordinates help identify the general area within Frederick, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21709 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 Frederick within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21709?

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

In which county is 21709 located?

ZIP code 21709 is situated within Frederick, MD.

What are the coordinates for 21709?

The approximate center point is 39.47000 (Latitude) and -77.39210 (Longitude).

Is ZIP code 21709 active?

This page lists ZIP 21709 as Listed based on the latest refresh date shown above.

Does ZIP 21709 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