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