Home Postcode finder WA Hamelin Bay Hamelin Bay postcode WA Hamelin Bay is a locality in Western Australia covered by postcode 6288. Postcode 6288 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Hamelin Bay business listing Be the first listing in Hamelin Bay Common questionsWhat is the postcode for Hamelin Bay?Hamelin Bay, WA has the postcode 6288.What state is Hamelin Bay in?Hamelin Bay is in Western Australia (WA).Does postcode 6288 cover more than one suburb?Yes. Postcode 6288 covers 7 localities, so the postcode alone does not identify Hamelin Bay. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.