Home Postcode finder WA Lowden Lowden postcode WA Lowden is a locality in Western Australia covered by postcode 6240. Postcode 6240 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Lowden business listing Be the first listing in Lowden Common questionsWhat is the postcode for Lowden?Lowden, WA has the postcode 6240.What state is Lowden in?Lowden is in Western Australia (WA).Does postcode 6240 cover more than one suburb?No. Postcode 6240 covers Lowden only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.