Home Postcode finder SA Cleve Cleve postcode SA Cleve is a locality in South Australia covered by postcode 5640. Postcode 5640 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Cleve business listing More business listings in Cleve Businesses in CleveCleve Area School2 Second St · 08 86282104 Common questionsWhat is the postcode for Cleve?Cleve, SA has the postcode 5640.What state is Cleve in?Cleve is in South Australia (SA).Does postcode 5640 cover more than one suburb?Yes. Postcode 5640 covers 4 localities, so the postcode alone does not identify Cleve. Browse other postcodes in South Australia, or widen the search to every Australian postcode.