In which county is ZIP code 20690 located?

ZIP 20690 is listed under St. Marys, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 20690: Tall Timbers, MD

ZIP: 20690

County: St. Marys

Coordinates: 38.16530, -76.53990

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Tall Timbers, MD postal area 20690. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Tall Timbers
ZIP Code	20690
County	St. Marys
State	MD
Latitude / Longitude	38.16530, -76.53990
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 20690 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 20690 are listed as 38.16530 / -76.53990, useful for GPS and service checks in and around Tall Timbers, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20690 for mail delivery and general location reference in St. Marys, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Tall Timbers within MD.

Frequently Asked Questions

What is the primary city for ZIP code 20690?

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

In which county is 20690 located?

ZIP code 20690 is situated within St. Marys, MD.

What are the coordinates for 20690?

The approximate center point is 38.16530 (Latitude) and -76.53990 (Longitude).

Is ZIP code 20690 active?

This page lists ZIP 20690 as Listed based on the latest refresh date shown above.

Does ZIP 20690 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