Home Postcode finder SA Worrolong Worrolong postcode SA Worrolong is a locality in South Australia covered by postcode 5291. Postcode 5291 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Worrolong business listing Be the first listing in Worrolong Common questionsWhat is the postcode for Worrolong?Worrolong, SA has the postcode 5291.What state is Worrolong in?Worrolong is in South Australia (SA).Does postcode 5291 cover more than one suburb?Yes. Postcode 5291 covers 34 localities, so the postcode alone does not identify Worrolong. Browse other postcodes in South Australia, or widen the search to every Australian postcode.