Home Postcodes by state NT 0850 Postcode 0850 0850 is the postcode for 6 localities in NT: Cossack, Emungalan, Katherine, Katherine East, Katherine South and Lansdowne. Localities with postcode 0850CossackNTEmungalanNTKatherineNTKatherine EastNTKatherine SouthNTLansdowneNT Postcode 0850 State or territory Northern Territory (NT) Localities 6 Council area Katherine Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 0847 · Postcode 0852