Home Postcodes by state WA Kanowna Kanowna postcode WA Kanowna is a locality in Western Australia covered by postcode 6431. Postcode 6431 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Council area Kalgoorlie-Boulder Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Kanowna business listing Be the first listing in Kanowna Also in postcode 6431BooraraWA 6431Brown HillWA 6431BulongWA 6431Emu FlatWA 6431FeysvilleWA 6431KookynieWA 6431KurnalpiWA 6431LakewoodWA 6431Ora BandaWA 6431Plumridge LakesWA 6431TrafalgarWA 6431WarburtonWA 6431 Common questionsWhat is the postcode for Kanowna?Kanowna, WA has the postcode 6431.What state is Kanowna in?Kanowna is in Western Australia (WA).What council is Kanowna in?Kanowna is in the Kalgoorlie-Boulder local government area.Does postcode 6431 cover more than one suburb?Yes. Postcode 6431 covers 13 localities, so the postcode alone does not identify Kanowna. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.