Home Postcode finder NSW Wybong Wybong postcode NSW Wybong is a locality in New South Wales covered by postcode 2333. Postcode 2333 State or territory New South Wales (NSW) Region Hunter Add a free Wybong business listing Be the first listing in Wybong Common questionsWhat is the postcode for Wybong?Wybong, NSW has the postcode 2333.What state is Wybong in?Wybong is in New South Wales (NSW).Does postcode 2333 cover more than one suburb?Yes. Postcode 2333 covers 14 localities, so the postcode alone does not identify Wybong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.