This simply means relating to the post office. It could be for a mail or letters or packages.
postal
A system of postal codes
Air mail.
It's "Codigo Postal" and it means Zip Code.
It depends on which country you mean. Many countries increase postal rates annually.
The meaning of codigos postales in English is postal code. Postal code is primarily used for postal purposes and locating locations where mail can be delivered among other things like packages.
MS is the postal code for Mississippi.
postal code
Forwarding Order Expired
In the 1990's there was a rash of postal worker rage wherein many workers got out of hand to the point of bringing guns to work and shots being fired. As a result the phrases "go postal" or "go postal worker" were coined.
Fleet Post Office
United Parcel Service