Home Postcode finder SA Old Calperum Old Calperum postcode SA Old Calperum is a locality in South Australia covered by postcode 5341. Postcode 5341 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Old Calperum business listing Be the first listing in Old Calperum Common questionsWhat is the postcode for Old Calperum?Old Calperum, SA has the postcode 5341.What state is Old Calperum in?Old Calperum is in South Australia (SA).Does postcode 5341 cover more than one suburb?Yes. Postcode 5341 covers 8 localities, so the postcode alone does not identify Old Calperum. Browse other postcodes in South Australia, or widen the search to every Australian postcode.