Home Postcodes by state WA Mitchell Plateau Mitchell Plateau postcode WA Mitchell Plateau is a locality in Western Australia covered by postcode 6740. Postcode 6740 State or territory Western Australia (WA) Region North West Suburbs Council area Wyndham-East Kimberley Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Mitchell Plateau business listing Be the first listing in Mitchell Plateau Also in postcode 6740Drysdale RiverWA 6740KalumburuWA 6740OombulgurriWA 6740Prince Regent RiverWA 6740WyndhamWA 6740 Common questionsWhat is the postcode for Mitchell Plateau?Mitchell Plateau, WA has the postcode 6740.What state is Mitchell Plateau in?Mitchell Plateau is in Western Australia (WA).What council is Mitchell Plateau in?Mitchell Plateau is in the Wyndham-East Kimberley local government area.Does postcode 6740 cover more than one suburb?Yes. Postcode 6740 covers 6 localities, so the postcode alone does not identify Mitchell Plateau. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.