Home Postcode finder NSW Lemon Tree Lemon Tree postcode NSW Lemon Tree 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 Lemon Tree business listing Be the first listing in Lemon Tree Common questionsWhat is the postcode for Lemon Tree?Lemon Tree, NSW has the postcode 2259.What state is Lemon Tree in?Lemon Tree 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 Lemon Tree. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.