Home Postcode finder SA Cape Jervis Cape Jervis postcode SA Cape Jervis is a locality in South Australia covered by postcode 5204. Postcode 5204 State or territory South Australia (SA) Region Adelaide Add a free Cape Jervis business listing Be the first listing in Cape Jervis Common questionsWhat is the postcode for Cape Jervis?Cape Jervis, SA has the postcode 5204.What state is Cape Jervis in?Cape Jervis is in South Australia (SA).Does postcode 5204 cover more than one suburb?Yes. Postcode 5204 covers 10 localities, so the postcode alone does not identify Cape Jervis. Browse other postcodes in South Australia, or widen the search to every Australian postcode.