Home Postcode finder WA Karrakup Karrakup postcode WA Karrakup is a locality in Western Australia covered by postcode 6122. Postcode 6122 State or territory Western Australia (WA) Region North West Suburbs Add a free Karrakup business listing Be the first listing in Karrakup Common questionsWhat is the postcode for Karrakup?Karrakup, WA has the postcode 6122.What state is Karrakup in?Karrakup is in Western Australia (WA).Does postcode 6122 cover more than one suburb?Yes. Postcode 6122 covers 4 localities, so the postcode alone does not identify Karrakup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.