Home Postcode finder SA Dalkey Dalkey postcode SA Dalkey is a locality in South Australia covered by postcode 5461. Postcode 5461 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Dalkey business listing Be the first listing in Dalkey Common questionsWhat is the postcode for Dalkey?Dalkey, SA has the postcode 5461.What state is Dalkey in?Dalkey is in South Australia (SA).Does postcode 5461 cover more than one suburb?Yes. Postcode 5461 covers 13 localities, so the postcode alone does not identify Dalkey. Browse other postcodes in South Australia, or widen the search to every Australian postcode.