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

I actuality recently read (part of) a book by John Grisham called “The Summons” where the main character’s father never writes city/state — only zip code.I never felt right about it until then, but yeah, entirely possible, but risky.