Home Postcode finder SA Thevenard Thevenard postcode SA Thevenard is a locality in South Australia covered by postcode 5690. Postcode 5690 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Thevenard business listing Be the first listing in Thevenard Common questionsWhat is the postcode for Thevenard?Thevenard, SA has the postcode 5690.What state is Thevenard in?Thevenard is in South Australia (SA).Does postcode 5690 cover more than one suburb?Yes. Postcode 5690 covers 19 localities, so the postcode alone does not identify Thevenard. Browse other postcodes in South Australia, or widen the search to every Australian postcode.