Home Postcode finder NSW Byangum Byangum postcode NSW Byangum 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 Byangum business listing Be the first listing in Byangum Common questionsWhat is the postcode for Byangum?Byangum, NSW has the postcode 2484.What state is Byangum in?Byangum 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 Byangum. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.