Home Postcode finder NSW Wilcannia Wilcannia postcode NSW Wilcannia is a locality in New South Wales covered by postcode 2836. Postcode 2836 State or territory New South Wales (NSW) Region NSW Country West Add a free Wilcannia business listing More business listings in Wilcannia Businesses in WilcanniaSt Therese's Community Primary SchoolLot 3711 Warrali Ave · 08 80915933Wilcannia Central SchoolHood St · 08 80915801 Common questionsWhat is the postcode for Wilcannia?Wilcannia, NSW has the postcode 2836.What state is Wilcannia in?Wilcannia is in New South Wales (NSW).Does postcode 2836 cover more than one suburb?Yes. Postcode 2836 covers 2 localities, so the postcode alone does not identify Wilcannia. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.