In which county is ZIP code 20657 located?

ZIP 20657 is listed under Calvert, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 20657: Lusby, MD

ZIP: 20657

County: Calvert

Coordinates: 38.36610, -76.43460

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 20657 in Lusby, MD. We include verified county details for Calvert plus key geographic references used for mapping and logistics.

Primary City	Lusby
ZIP Code	20657
County	Calvert
State	MD
Latitude / Longitude	38.36610, -76.43460
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 20657 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 20657 are listed as 38.36610 / -76.43460, useful for GPS and service checks in and around Lusby, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20657 for mail delivery and general location reference in Calvert, MD.

Some addresses near Lusby may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Lusby within MD.

Frequently Asked Questions

What is the primary city for ZIP code 20657?

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

In which county is 20657 located?

ZIP code 20657 is situated within Calvert, MD.

What are the coordinates for 20657?

The approximate center point is 38.36610 (Latitude) and -76.43460 (Longitude).

Is ZIP code 20657 active?

This page lists ZIP 20657 as Listed based on the latest refresh date shown above.

Does ZIP 20657 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