Home Postcode finder NSW Wyong Wyong postcode NSW Wyong 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 Wyong business listing More business listings in Wyong Businesses in WyongBerkmans Chartered AccountantsSuite 1A 14 Pacific Highway · (02) 4351 2622Berkmans Chartered AccountantsSuite 1A · (02) 4351 2622Berkmans Chartered AccountantsSuite 1A · (02) 4351 2622 Common questionsWhat is the postcode for Wyong?Wyong, NSW has the postcode 2259.What state is Wyong in?Wyong 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 Wyong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.