Home Postcode finder SA Yalpara Yalpara postcode SA Yalpara is a locality in South Australia covered by postcode 5431. Postcode 5431 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Yalpara business listing Be the first listing in Yalpara Common questionsWhat is the postcode for Yalpara?Yalpara, SA has the postcode 5431.What state is Yalpara in?Yalpara is in South Australia (SA).Does postcode 5431 cover more than one suburb?Yes. Postcode 5431 covers 14 localities, so the postcode alone does not identify Yalpara. Browse other postcodes in South Australia, or widen the search to every Australian postcode.