Re: deriving state from first digit of post code, that's true 90% of the time but the exceptions -- some of which are pretty big, eg. the entire Australian Capi

Re: deriving state from first digit of post code, that's true 90% of the time but the exceptions -- some of which are pretty big, eg. the entire Australian Capital Territory -- will kill you. https://en.wikipedia.org/wiki/Postcodes_in_Australia#Australia_States_and_territories https://en.wikipedia.org/wiki/Postcodes_in_Australia#Austral...