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