Home Postcode finder WA Palmdale Palmdale postcode WA Palmdale is a locality in Western Australia covered by postcode 6328. Postcode 6328 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Palmdale business listing Be the first listing in Palmdale Common questionsWhat is the postcode for Palmdale?Palmdale, WA has the postcode 6328.What state is Palmdale in?Palmdale is in Western Australia (WA).Does postcode 6328 cover more than one suburb?Yes. Postcode 6328 covers 8 localities, so the postcode alone does not identify Palmdale. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.