Home Postcode finder NT Coonawarra Coonawarra postcode NT Coonawarra is a locality in Northern Territory covered by postcode 0820. Postcode 0820 State or territory Northern Territory (NT) Region Darwin Add a free Coonawarra business listing Be the first listing in Coonawarra Common questionsWhat is the postcode for Coonawarra?Coonawarra, NT has the postcode 0820.What state is Coonawarra in?Coonawarra is in Northern Territory (NT).Does postcode 0820 cover more than one suburb?Yes. Postcode 0820 covers 18 localities, so the postcode alone does not identify Coonawarra. Browse other postcodes in Northern Territory , or widen the search to every Australian postcode.