Well I ordered something that is going to come by a mailing service (like a letter), not a package service if you get what I mean (usps instead of ups). But who knows could end up being FedEx or UPS. But when I was giving my address I had to give the plus 4 zip code along with my zip code. So the whole 9 digits. What I did was I just looked on a few Amazon packages I got before. Surprisingly every single box has a plus 4 zipcode for the apartments 500-520 or something like that, but im 201. Saw this when i looked at all of my letter mail from my mailbox. The wrong plus 4 is still for the same apartment complex thankfully. Am I stressing over nothing?