In which county is ZIP code 20686 located?

ZIP 20686 is listed under St. Marys, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 20686: Saint Marys City, MD

ZIP: 20686

County: St. Marys

Coordinates: 38.18710, -76.43440

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 20686, serving Saint Marys City in MD. It lies in St. Marys and supports delivery, planning, and address verification.

Primary City	Saint Marys City
ZIP Code	20686
County	St. Marys
State	MD
Latitude / Longitude	38.18710, -76.43440
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 20686 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 20686 is commonly represented around 38.18710, -76.43440. These coordinates help identify the general area within St. Marys, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20686 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 Saint Marys City within MD.

Frequently Asked Questions

What is the primary city for ZIP code 20686?

The primary city for this ZIP code is Saint Marys City, located in MD.

In which county is 20686 located?

ZIP code 20686 is situated within St. Marys, MD.

What are the coordinates for 20686?

The approximate center point is 38.18710 (Latitude) and -76.43440 (Longitude).

Is ZIP code 20686 active?

This page lists ZIP 20686 as Listed based on the latest refresh date shown above.

Does ZIP 20686 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