Home Postcode finder NSW Wadalba Wadalba postcode NSW Wadalba 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 Wadalba business listing More business listings in Wadalba Businesses in WadalbaPro Excavation Central Coast1 Stanhope Cres, Wadalba NSW 2259, Australia · (02) 4003 6085Wadalba Community SchoolOrchid Way · 02 43925000 Common questionsWhat is the postcode for Wadalba?Wadalba, NSW has the postcode 2259.What state is Wadalba in?Wadalba 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 Wadalba. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.