Have you checked The (USPS) List?to the PDF of "Stations/Branches Identified For Full Study." For some reason I find these lists fascinating. I did the same thing with this one that I did with the Starbucks list from last year — searched for places I might have been, might have an opinion on, or might be surprised to find out are being targeted for potential closure.
I don't know if I really expected to be surprised by anything on the list, but I was — the Kenmore (Buffalo, NY) Branch is on the list. Why this one is targeted, considering how it was often bustling when I would drop in to mail a rent check or pick up a package, is beyond me, but I'm sure the USPS has its reasons.