why do we need to use city and state in our addresses if ZIP codes are already linked to the city and state?

Question

why do we need to use city and state in our addresses if ZIP codes are already linked to the city and state?

In: 100

Answer 1

For simplicity sake let’s say the zip code is 100, and there are 3 towns that use the same zip code. The problem raises, when 2 of those towns have street named “center street” or something, now you have same zip code and 2 different street in different locations. So you don’t know does the post go to town A or town B, unless it has enough information to pinpoint the exact location of the delivery.