Home Postcode finder WA Piesseville Piesseville postcode WA Piesseville is a locality in Western Australia covered by postcode 6315. Postcode 6315 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Piesseville business listing Be the first listing in Piesseville Common questionsWhat is the postcode for Piesseville?Piesseville, WA has the postcode 6315.What state is Piesseville in?Piesseville is in Western Australia (WA).Does postcode 6315 cover more than one suburb?Yes. Postcode 6315 covers 12 localities, so the postcode alone does not identify Piesseville. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.