Home Postcodes by state WA Mount Madden Mount Madden postcode WA Mount Madden is a locality in Western Australia covered by postcode 6356. Postcode 6356 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Council area Lake Grace Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Mount Madden business listing Be the first listing in Mount Madden Suburbs near Mount MaddenStraight-line distance between locality centres.Lake KingWA 6356 · 23.7 km Also in postcode 6356Hatter HillWA 6356Lake KingWA 6356 Common questionsWhat is the postcode for Mount Madden?Mount Madden, WA has the postcode 6356.What state is Mount Madden in?Mount Madden is in Western Australia (WA).What council is Mount Madden in?Mount Madden is in the Lake Grace local government area.Does postcode 6356 cover more than one suburb?Yes. Postcode 6356 covers 3 localities, so the postcode alone does not identify Mount Madden.What suburbs are near Mount Madden?The closest are Lake King (23.7 km). Distances are straight lines between locality centres. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.