Just how important this subject is was illustrated by the current census. We have some apartment buildings that are in tax locality "A". "A" does not have a post office of its own, and until a recent congressional intervention, mail addressed to "A" locality could be returned by the post office as undeliverable, because the zip code book did not recognize "A" as a valid location. Tax locality "A" addresses are normally serviced by the post office in "B" locality. Computer address programs recognize street addresses in "A" locality as being from "B", even though they are not in "B" tax locality. This was the case with the Bureau of the Census, which arbitrarily assigned "B" zip codes and town names to the "A" apartments locations. As a consequence, the Bureau of the Census addressed Census 2000 forms to "B" zip code. The catch is that these particular apartment buildings which are located in "A" tax locality are in fact serviced by a different post office in neighboring community "C", which, to complicate matters further, is located in a different county. This state of affairs had several consequences for Census 2000. (1) Most Census mail to these buildings was not returned making a physical enumeration necessary. (2) The Non-response Follow Up (NRFU) enumeration worksheets and prepared forms have to be destroyed have to be deleted and replaced with new worksheets and forms with the correct address reflecting the "C" zip code. (3) Any follow-ups already enumerated have to be transcribed on to new forms. (4) The question of whether census returns made directly by residents or are assigned to jurisdiction "A", "B", or "C" is undetermined at this point in time. (5) Assignment of NRFU returns to "A", "B" or "C" tax localities also remains undetermined. (6) Since the area is heavily populated, it will have a material adverse effect on tax locality "A" should its residents be assigned to either "B" or "C" localities because of postal and Census Bureau confusion. While my understanding of the internal workings of the Bureau of the Census remains marginal at best, it seems to me that it is in the best interests of communities to work toward alignment of overlapping jurisdictions of post office addresses and tax addresses. The failure to address this situation could result in a material disadvantage to those communities which have postal confusions.