Barry Caplan wrote: > Doesn't every address that USPS delivers to have a unique 9 digit > zip code, making house numbers a legacy?
In fact no. As a trivial counterexample, P.O. Box Numbers become ZIP+4 codes by adding the 5-digit ZIP code to the 4 low order digits of the box number (as in my case), but I have seen P.O. Box addresses with more than 4 digits. For another example, the building in New York City that I live in contains 10 apartments, equally divided among two ZIP+4 codes. > From the US, couldn't I > get a letter to you just by putting 12017-0042 on the envelope? It happens to work for me because the 12017 post office has comfortably fewer than 10,000 boxes -- in fact, it has a few hundred at most. In general, though, USPS will not deliver without some kind of addressee's name, so that is required in addition to the ZIP+4. -- John Cowan <[EMAIL PROTECTED]> http://www.reutershealth.com I amar prestar aen, han mathon ne nen, http://www.ccil.org/~cowan han mathon ne chae, a han noston ne 'wilith. --Galadriel, _LOTR:FOTR_
