ZIP codes: Delivering more than you bargained for

Don't Drink the Milk – The curious history of things - A podcast by DW - Tuesdays

Psst, your ZIP code is telling all your secrets. In fact, so much is hidden in that short string of digits at the end of your address – we're talking pride, discrimination and marketing gold. Starting with a bulging wartime mail sack and ending with a cup of tea down an Irish country road – this is the winding journey of the postal code.