Home Postcode finder NT East Side East Side postcode NT East Side is a locality in Northern Territory covered by postcode 0870. Postcode 0870 State or territory Northern Territory (NT) Region Adelaide Add a free East Side business listing Be the first listing in East Side Common questionsWhat is the postcode for East Side?East Side, NT has the postcode 0870.What state is East Side in?East Side 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 East Side. Browse other postcodes in Northern Territory , or widen the search to every Australian postcode.