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