A district distinguished from others in the region, typically by a set of initials or numbers, in order to make the sorting and delivery of post more efficient.
Origin
Mid 19th century; earliest use found in British Postal Guide.
Definition of postal district in US English:
postal district
noun
A district distinguished from others in the region, typically by a set of initials or numbers, in order to make the sorting and delivery of post more efficient.
Origin
Mid 19th century; earliest use found in British Postal Guide.