In which county is ZIP code 21638 located?

ZIP 21638 is listed under Queen Annes, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21638: Grasonville, MD

ZIP: 21638

County: Queen Annes

Coordinates: 38.94560, -76.19970

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21638 in Grasonville, MD. We include verified county details for Queen Annes plus key geographic references used for mapping and logistics.

Primary City	Grasonville
ZIP Code	21638
County	Queen Annes
State	MD
Latitude / Longitude	38.94560, -76.19970
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 21638 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 21638 are listed as 38.94560 / -76.19970, useful for GPS and service checks in and around Grasonville, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21638 for mail delivery and general location reference in Queen Annes, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Grasonville within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21638?

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

In which county is 21638 located?

ZIP code 21638 is situated within Queen Annes, MD.

What are the coordinates for 21638?

The approximate center point is 38.94560 (Latitude) and -76.19970 (Longitude).

Is ZIP code 21638 active?

This page lists ZIP 21638 as Listed based on the latest refresh date shown above.

Does ZIP 21638 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