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  2. What is the zip code of Saint Charles, MD, 20603

Saint Charles (MD) Zip Code is 20603 Latest Details Jul, 2025

Updated: 08-07-2025

Saint Charles (MD) zip Code is 20603, Postal Code details. Saint Charles is located in state MD, United States.

Find Zip Code 20603 Details

ZIP code 20603 is located in Saint Charles MD in the United States.

Postal Code United States Zip Code 20603 Latest update Saint Charles, MD
Zip Code / Postal Code 20603

City

Saint Charles

State Code

MD

County

Charles, United States

Postal Locations

Saint Charles, MD - Zip Code is - 20603

Postal

United States Postal Service USPS Link

Delivery Type

Package Delivery and first class mail.

The zip code 20603 is an essential part of the postal system in Saint Charles, MD. Located in a vibrant part of the city, this zip code covers a variety of neighborhoods, offering residents and businesses a unique blend of suburban comfort and urban convenience. Whether you're looking to send mail, relocate, or simply learn more about the area, Saint Charles has a lot to offer.

FAQ about Zip Code 20603, Saint Charles, (MD)

What is Zip code Saint Charles?

Saint Charles Zip Code: 20603, used by the Saint Charles Post Office and USPS, is a Zone Improvement Plan code that ensures faster, accurate mail delivery in Charles, MD. Represented by the American Postal Workers Union (APWU), USPS oversees postal operations.

What is Postal code of area Saint Charles?

Saint Charles Postal Code is: 20603

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