Home Postcode finder NT Undoolya Undoolya postcode NT Undoolya is a locality in Northern Territory covered by postcode 0870. Postcode 0870 State or territory Northern Territory (NT) Region Adelaide Add a free Undoolya business listing Be the first listing in Undoolya Common questionsWhat is the postcode for Undoolya?Undoolya, NT has the postcode 0870.What state is Undoolya in?Undoolya is in Northern Territory (NT).Does postcode 0870 cover more than one suburb?Yes. Postcode 0870 covers 20 localities, so the postcode alone does not identify Undoolya. Browse other postcodes in Northern Territory , or widen the search to every Australian postcode.