Home Postcode finder WA Dorre Island Dorre Island postcode WA Dorre Island is a locality in Western Australia covered by postcode 6701. Postcode 6701 State or territory Western Australia (WA) Region North West Suburbs Add a free Dorre Island business listing Be the first listing in Dorre Island Common questionsWhat is the postcode for Dorre Island?Dorre Island, WA has the postcode 6701.What state is Dorre Island in?Dorre Island is in Western Australia (WA).Does postcode 6701 cover more than one suburb?Yes. Postcode 6701 covers 28 localities, so the postcode alone does not identify Dorre Island. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.