Home Postcodes by state NT 0860 Postcode 0860 0860 is the postcode for Tennant Creek, NT. Localities with postcode 0860Tennant CreekNT Postcode 0860 State or territory Northern Territory (NT) Localities 1 Council area Barkly Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 0854 · Postcode 0862