"The very term 'country' can be controversial. Who decides what is a country and what isn't? The criterion used in this document is simple: if the USPS lists it in its Index to Countries and Localities, we treat it as a country. Thus some localities (such as Reunion Island) that are not distinct countries are listed, whereas other localities that consider themselves countries (such as Western Sahara) are not listed (but still discussed). Rationale: if you address mail from the USA to WESTERN SAHARA, the USPS won't know what to do with it. If you want to send mail to SAINT PIERRE AND MIQUELON (a part of France that is in Canada) from the USA, it doesn't make sense for the mail to go all the way to France and back." Frank's Compulsive Guide to Country Addresses
Derek Sivers explains the fascinating Japanese addressing system.
I can't put a serious link up because I don't wanna link it. . . I don't like the fact that if you have your address and number listed in the phone book, suddenly now if someone enters your name into Google along with the city you presumably live in: Your address and phone number come up. I use no other search engines, but I would presume the same happens there. These aren't the days of PENNSYLVANIA-65000 anymore Harrietta.