Home Postcode finder SA Donovans Donovans postcode SA Donovans 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 Donovans business listing Be the first listing in Donovans Common questionsWhat is the postcode for Donovans?Donovans, SA has the postcode 5291.What state is Donovans in?Donovans 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 Donovans. Browse other postcodes in South Australia, or widen the search to every Australian postcode.