Home Postcode finder WA Maranup Maranup postcode WA Maranup is a locality in Western Australia covered by postcode 6256. Postcode 6256 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Maranup business listing Be the first listing in Maranup Common questionsWhat is the postcode for Maranup?Maranup, WA has the postcode 6256.What state is Maranup in?Maranup is in Western Australia (WA).Does postcode 6256 cover more than one suburb?Yes. Postcode 6256 covers 6 localities, so the postcode alone does not identify Maranup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.