Home Postcode finder NSW Tiona Tiona postcode NSW Tiona is a locality in New South Wales covered by postcode 2428. Postcode 2428 State or territory New South Wales (NSW) Region Hunter Add a free Tiona business listing Be the first listing in Tiona Common questionsWhat is the postcode for Tiona?Tiona, NSW has the postcode 2428.What state is Tiona in?Tiona is in New South Wales (NSW).Does postcode 2428 cover more than one suburb?Yes. Postcode 2428 covers 21 localities, so the postcode alone does not identify Tiona. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.