Home Postcode finder WA Piesse Brook Piesse Brook postcode WA Piesse Brook is a locality in Western Australia covered by postcode 6076. Postcode 6076 State or territory Western Australia (WA) Region North West Suburbs Add a free Piesse Brook business listing Be the first listing in Piesse Brook Common questionsWhat is the postcode for Piesse Brook?Piesse Brook, WA has the postcode 6076.What state is Piesse Brook in?Piesse Brook is in Western Australia (WA).Does postcode 6076 cover more than one suburb?Yes. Postcode 6076 covers 11 localities, so the postcode alone does not identify Piesse Brook. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.