Home Postcode finder NSW Wherrol Flat Wherrol Flat postcode NSW Wherrol Flat is a locality in New South Wales covered by postcode 2429. Postcode 2429 State or territory New South Wales (NSW) Region Hunter Add a free Wherrol Flat business listing Be the first listing in Wherrol Flat Common questionsWhat is the postcode for Wherrol Flat?Wherrol Flat, NSW has the postcode 2429.What state is Wherrol Flat in?Wherrol Flat is in New South Wales (NSW).Does postcode 2429 cover more than one suburb?Yes. Postcode 2429 covers 32 localities, so the postcode alone does not identify Wherrol Flat. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.