Home Postcode finder WA Massey Bay Massey Bay postcode WA Massey Bay 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 Massey Bay business listing Be the first listing in Massey Bay Common questionsWhat is the postcode for Massey Bay?Massey Bay, WA has the postcode 6701.What state is Massey Bay in?Massey Bay 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 Massey Bay. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.