Home Postcode finder SA Eurelia Eurelia postcode SA Eurelia 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 Eurelia business listing Be the first listing in Eurelia Common questionsWhat is the postcode for Eurelia?Eurelia, SA has the postcode 5431.What state is Eurelia in?Eurelia 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 Eurelia. Browse other postcodes in South Australia, or widen the search to every Australian postcode.