Home Postcode finder SA Cunliffe Cunliffe postcode SA Cunliffe is a locality in South Australia covered by postcode 5554. Postcode 5554 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Cunliffe business listing Be the first listing in Cunliffe Common questionsWhat is the postcode for Cunliffe?Cunliffe, SA has the postcode 5554.What state is Cunliffe in?Cunliffe is in South Australia (SA).Does postcode 5554 cover more than one suburb?Yes. Postcode 5554 covers 10 localities, so the postcode alone does not identify Cunliffe. Browse other postcodes in South Australia, or widen the search to every Australian postcode.