Home Postcode finder SA Dowling Dowling postcode SA Dowling is a locality in South Australia covered by postcode 5555. Postcode 5555 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Dowling business listing Be the first listing in Dowling Common questionsWhat is the postcode for Dowling?Dowling, SA has the postcode 5555.What state is Dowling in?Dowling is in South Australia (SA).Does postcode 5555 cover more than one suburb?Yes. Postcode 5555 covers 11 localities, so the postcode alone does not identify Dowling. Browse other postcodes in South Australia, or widen the search to every Australian postcode.