Home Postcode finder WA Marrah Marrah postcode WA Marrah is a locality in Western Australia covered by postcode 6532. Postcode 6532 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Marrah business listing Be the first listing in Marrah Common questionsWhat is the postcode for Marrah?Marrah, WA has the postcode 6532.What state is Marrah in?Marrah is in Western Australia (WA).Does postcode 6532 cover more than one suburb?Yes. Postcode 6532 covers 59 localities, so the postcode alone does not identify Marrah. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.