Home Postcode finder NSW Wang Wauk Wang Wauk postcode NSW Wang Wauk is a locality in New South Wales covered by postcode 2423. Postcode 2423 State or territory New South Wales (NSW) Region Hunter Add a free Wang Wauk business listing Be the first listing in Wang Wauk Common questionsWhat is the postcode for Wang Wauk?Wang Wauk, NSW has the postcode 2423.What state is Wang Wauk in?Wang Wauk is in New South Wales (NSW).Does postcode 2423 cover more than one suburb?Yes. Postcode 2423 covers 20 localities, so the postcode alone does not identify Wang Wauk. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.