Home Postcode finder SA Parliament House Parliament House postcode SA Parliament House is a locality in South Australia covered by postcode 5000. Postcode 5000 State or territory South Australia (SA) Region Adelaide Add a free Parliament House business listing Be the first listing in Parliament House Common questionsWhat is the postcode for Parliament House?Parliament House, SA has the postcode 5000.What state is Parliament House in?Parliament House is in South Australia (SA).Does postcode 5000 cover more than one suburb?Yes. Postcode 5000 covers 8 localities, so the postcode alone does not identify Parliament House. Browse other postcodes in South Australia, or widen the search to every Australian postcode.