Home Postcodes by state NT 0846 Postcode 0846 0846 is the postcode for Adelaide River, NT. Localities with postcode 0846Adelaide RiverNT Postcode 0846 State or territory Northern Territory (NT) Localities 1 Council area Coomalie Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 0845 · Postcode 0847