Dr Michael Baker
Could some means be added to allow different address formats in different locales?
I've done a brief search on the web and found FRANK'S COMPULSIVE GUIDE TO POSTAL ADDRESSES which lists many different address formats . There may well be other or better guides.
For Australia we would need three letter codes for states and a single part 4 digit post code instead of a two part zip code.
and scroll down to "The City Line"