ZIP Codes by

Also see: Maryland Area Codes by County

ZIP Codes for Cities & Towns - Sorted by County

Allegany
Anne Arundel
Baltimore
Baltimore City
Calvert

Caroline
Carroll
Cecil
Charles
Dorchester

Frederick
Garrett
Harford
Howard
Kent

Montgomery
Prince Georges
Queen Annes
Saint Marys
Somerset

Talbot
Washington
Wicomico
Worcester