Home Postcode finder NSW Yarramalong Yarramalong postcode NSW Yarramalong is a locality in New South Wales covered by postcode 2259. Postcode 2259 State or territory New South Wales (NSW) Region Gosford Add a free Yarramalong business listing Be the first listing in Yarramalong Common questionsWhat is the postcode for Yarramalong?Yarramalong, NSW has the postcode 2259.What state is Yarramalong in?Yarramalong is in New South Wales (NSW).Does postcode 2259 cover more than one suburb?Yes. Postcode 2259 covers 42 localities, so the postcode alone does not identify Yarramalong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.