4241
I think there’s a 7 and a 1 or two, and maybe a 0 or something. I looked it up once and just three apartments share it.
Nope. I’m not making room for that in my head, until they make me anyway.
I know one of em
3203
I’m afraid I do not know them. Furthermore, ZIP codes are meaningless, as revealed by Newman in Seinfeld!
Yes, as I frequently see it on incoming mail.
5200 - not that any of the bajillion freebie address labels that I keep getting include the last 4 digits…
Yes, it’s 5934. I didn’t know of the DPB. I’ll look for that in my mail.
I don’t have one. My second-last postal code was M8Y 3M3, though. 
No but back when I was filling out forms often I did.
Not a clue. On the rare instances I need it for something, I hunt around for a piece of incoming mail with it on there.
I reported earlier that I know mine. I almost always use it. It’s printed on my checks and on personal return labels. And when sending mail I usually look up the recipient’s +4 and use it. I don’t know if it makes any difference in postal delivery speed or accuracy, but I just use it. Probably has something to do with me being former military, and a briefly former postal employee.
I send out a few hundred DVDs every year, and always include the +4, even though I hand-address the labels. I could use stickers, but I hate running stickers through a printer - one sticker peeling off seems to be inevitable. It’s not a huge hassle, and does seem to speed delivery.
I do. Our ZIP code is a palindrome (or whatever the numeric equivalent is), as is the other side of the street’s +4 code. Ours breaks the symmetry.
Actually, that kind of brings up a question. By ‘other side of the street’, that’s how the post office does it. But we’re at the very end of a mile-long cul-de-sac, and our driveway is pretty much in the middle. Given the rural nature of the area, I never use the +4 … could I just start using the opposite side of the street’s code for elegance’s sake, or would that disturb the time-space continuum?
I know mine. When I used it yesterday the postal worker told me it was an incomplete address.
No, the mail gets to me fine without it, so there’s not much motivation.
It’s been decades since I left the house where I grew up and my parents are long gone, but I still remember the four-number code at the end. But I don’t remeber any part of the Zip codes where I lived elsewhere the US after leaving home. And we don’t have the four-number extension over here.
I also remember the telephone number we had when I was growing up.
For some reason, two different ones wind up going to me. I know one, because it’s in a pattern, but not the other. I now get more of the one I remember, but I’m not sure if that’s because it’s right, or because it’s the one I put when filling out my address.