Home Postcode finder SA Point Boston Point Boston postcode SA Point Boston 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 Point Boston business listing Be the first listing in Point Boston Common questionsWhat is the postcode for Point Boston?Point Boston, SA has the postcode 5607.What state is Point Boston in?Point Boston 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 Point Boston. Browse other postcodes in South Australia, or widen the search to every Australian postcode.