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