Home Postcode finder WA Eighty Mile Beach Eighty Mile Beach postcode WA Eighty Mile Beach 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 Eighty Mile Beach business listing Be the first listing in Eighty Mile Beach Common questionsWhat is the postcode for Eighty Mile Beach?Eighty Mile Beach, WA has the postcode 6725.What state is Eighty Mile Beach in?Eighty Mile Beach 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 Eighty Mile Beach. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.