At 1/18/2005 08:46 AM (Tuesday), Lester Caine wrote:

>I am aiming for an AREA/STATE/COUNTY table per country (US has STATE and
>COUNTY table), followed by a TOWN table followed by POSTCODE/ZIP.

Just remember that the US postal organization does not match the geographic
organization. That is, one town will almost always fit into one county but
definitely will not always fit into one postal code. In fact one postal
code can span two different states!

So, keep the postal hierarchy separate from the geography hierarchy!