Home Postcode finder WA Magenta Magenta postcode WA Magenta is a locality in Western Australia covered by postcode 6355. Postcode 6355 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Magenta business listing Be the first listing in Magenta Common questionsWhat is the postcode for Magenta?Magenta, WA has the postcode 6355.What state is Magenta in?Magenta is in Western Australia (WA).Does postcode 6355 cover more than one suburb?Yes. Postcode 6355 covers 11 localities, so the postcode alone does not identify Magenta. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.