Home Postcode finder NSW Gwandalan Gwandalan postcode NSW Gwandalan 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 Gwandalan business listing More business listings in Gwandalan Businesses in GwandalanGwandalan Automotive47 Orana Road, Gwandalan NSW 2259, Australia · 0249761800Gwandalan Public SchoolKanangra Drive · 02 49761318Road Side 4 SaleUlooloo Rd · 0402 336 214 Common questionsWhat is the postcode for Gwandalan?Gwandalan, NSW has the postcode 2259.What state is Gwandalan in?Gwandalan 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 Gwandalan. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.