Home Postcode finder NSW Dum Dum Dum Dum postcode NSW Dum Dum is a locality in New South Wales covered by postcode 2484. Postcode 2484 State or territory New South Wales (NSW) Region Gold Coast Add a free Dum Dum business listing Be the first listing in Dum Dum Common questionsWhat is the postcode for Dum Dum?Dum Dum, NSW has the postcode 2484.What state is Dum Dum in?Dum Dum is in New South Wales (NSW).Does postcode 2484 cover more than one suburb?Yes. Postcode 2484 covers 56 localities, so the postcode alone does not identify Dum Dum. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.