Home Postcode finder SA Rockleigh Rockleigh postcode SA Rockleigh is a locality in South Australia covered by postcode 5254. Postcode 5254 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Rockleigh business listing Be the first listing in Rockleigh Common questionsWhat is the postcode for Rockleigh?Rockleigh, SA has the postcode 5254.What state is Rockleigh in?Rockleigh is in South Australia (SA).Does postcode 5254 cover more than one suburb?Yes. Postcode 5254 covers 12 localities, so the postcode alone does not identify Rockleigh. Browse other postcodes in South Australia, or widen the search to every Australian postcode.