Home Postcode finder NT Katherine South Katherine South postcode NT Katherine South is a locality in Northern Territory covered by postcode 0850. Postcode 0850 State or territory Northern Territory (NT) Region Darwin Add a free Katherine South business listing Be the first listing in Katherine South Common questionsWhat is the postcode for Katherine South?Katherine South, NT has the postcode 0850.What state is Katherine South in?Katherine South is in Northern Territory (NT).Does postcode 0850 cover more than one suburb?Yes. Postcode 0850 covers 6 localities, so the postcode alone does not identify Katherine South. Browse other postcodes in Northern Territory , or widen the search to every Australian postcode.