Home Postcode finder WA Dampier Peninsula Dampier Peninsula postcode WA Dampier Peninsula is a locality in Western Australia covered by postcode 6725. Postcode 6725 State or territory Western Australia (WA) Region North West Suburbs Add a free Dampier Peninsula business listing Be the first listing in Dampier Peninsula Common questionsWhat is the postcode for Dampier Peninsula?Dampier Peninsula, WA has the postcode 6725.What state is Dampier Peninsula in?Dampier Peninsula is in Western Australia (WA).Does postcode 6725 cover more than one suburb?Yes. Postcode 6725 covers 10 localities, so the postcode alone does not identify Dampier Peninsula. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.