Home Postcode finder SA Stockyard Plain Stockyard Plain postcode SA Stockyard Plain is a locality in South Australia covered by postcode 5330. Postcode 5330 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Stockyard Plain business listing Be the first listing in Stockyard Plain Common questionsWhat is the postcode for Stockyard Plain?Stockyard Plain, SA has the postcode 5330.What state is Stockyard Plain in?Stockyard Plain is in South Australia (SA).Does postcode 5330 cover more than one suburb?Yes. Postcode 5330 covers 15 localities, so the postcode alone does not identify Stockyard Plain. Browse other postcodes in South Australia, or widen the search to every Australian postcode.