I'm in the town where I work, out on lunch break, looking for the local post office so I can turn in my temporary mail-forwarding form and buy some forever stamps (how romantic of a name!). I'm driving, and I call toll-free assistance and get the 800 number for USPS. I call them:
Me: Hi! I'm trying to find the nearest post office but I don't know what zipcode I'm in.
P.O. guy: Then I can't help you, I'm sorry. Have a good day.
Me: Wait, I can't just give you the name of the city and state?
P.O.: No, I need a zipcode.
Me: Ok, well, then, I need to find a zipcode.
P.O.: Ok, what's the city and state?