Yeah, at my job we arrange a lot of deliveries. Either stuff getting posted out from us or arranging for stuff to be posted to us. The 2 things we absolutely need to arrange delivery are the street number & the post code (UK equivalent to zip code).I disagree about zip codes. It's a unique numerical identifier for an area to guard against street name conflicts. I think if anything you should be able to write the zip code and leave the city/state out of it.