Home Postcode finder WA Gorge Rock Gorge Rock postcode WA Gorge Rock is a locality in Western Australia covered by postcode 6375. Postcode 6375 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Gorge Rock business listing Be the first listing in Gorge Rock Common questionsWhat is the postcode for Gorge Rock?Gorge Rock, WA has the postcode 6375.What state is Gorge Rock in?Gorge Rock is in Western Australia (WA).Does postcode 6375 cover more than one suburb?Yes. Postcode 6375 covers 6 localities, so the postcode alone does not identify Gorge Rock. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.