Home Postcode finder SA Boatswain Point Boatswain Point postcode SA Boatswain Point is a locality in South Australia covered by postcode 5275. Postcode 5275 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Boatswain Point business listing Be the first listing in Boatswain Point Common questionsWhat is the postcode for Boatswain Point?Boatswain Point, SA has the postcode 5275.What state is Boatswain Point in?Boatswain Point is in South Australia (SA).Does postcode 5275 cover more than one suburb?Yes. Postcode 5275 covers 15 localities, so the postcode alone does not identify Boatswain Point. Browse other postcodes in South Australia, or widen the search to every Australian postcode.