ZIP Codes are postal codes used by the USPS to identify specific geographic locations and improve the efficiency of the mail delivery system in the USA. In Maryland, ZIP Codes are used to ensure that mail is delivered to the correct location within the state. The first digit of a ZIP Code indicates a general region, the second and third digits indicate a specific region within that region, and the fourth and fifth digits indicate a specific delivery area or post office. ZIP Codes are an essential part of the mail delivery system in Maryland.
Silver Spring
Post Office
Silver Spring
Division
Montgomery
Pincode
20906
Parkville
Post Office
Parkville
Division
Baltimore
Pincode
21234
Gaithersburg
Post Office
Gaithersburg
Division
Montgomery
Pincode
20878
Hagerstown
Post Office
Hagerstown
Division
Washington
Pincode
21740
Germantown
Post Office
Germantown
Division
Montgomery
Pincode
20874
Pasadena
Post Office
Pasadena
Division
Anne Arundel
Pincode
21122
Owings Mills
Post Office
Owings Mills
Division
Baltimore
Pincode
21117
Dundalk
Post Office
Dundalk
Division
Baltimore
Pincode
21222
Silver Spring
Post Office
Silver Spring
Division
Montgomery
Pincode
20904
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"Explore Maryland ZIP Codes: A Guide to the Postal Codes of the Maryland State"