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

Aside from that – I like the idea of a really, really simple postal address. Here in the UK, a postcode is very specific. Imagine just having to write: Mr Smith, 11a, TL15 3PH.