Home Postcode finder SA Mount Dutton Bay Mount Dutton Bay postcode SA Mount Dutton Bay is a locality in South Australia covered by postcode 5607. Postcode 5607 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Mount Dutton Bay business listing Be the first listing in Mount Dutton Bay Common questionsWhat is the postcode for Mount Dutton Bay?Mount Dutton Bay, SA has the postcode 5607.What state is Mount Dutton Bay in?Mount Dutton Bay is in South Australia (SA).Does postcode 5607 cover more than one suburb?Yes. Postcode 5607 covers 50 localities, so the postcode alone does not identify Mount Dutton Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.