Home Postcode finder SA Cadgee Cadgee postcode SA Cadgee is a locality in South Australia covered by postcode 5271. Postcode 5271 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Cadgee business listing Be the first listing in Cadgee Common questionsWhat is the postcode for Cadgee?Cadgee, SA has the postcode 5271.What state is Cadgee in?Cadgee is in South Australia (SA).Does postcode 5271 cover more than one suburb?Yes. Postcode 5271 covers 18 localities, so the postcode alone does not identify Cadgee. Browse other postcodes in South Australia, or widen the search to every Australian postcode.