Home Postcode finder SA Gerard Gerard postcode SA Gerard is a locality in South Australia covered by postcode 5343. Postcode 5343 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Gerard business listing Be the first listing in Gerard Common questionsWhat is the postcode for Gerard?Gerard, SA has the postcode 5343.What state is Gerard in?Gerard is in South Australia (SA).Does postcode 5343 cover more than one suburb?Yes. Postcode 5343 covers 6 localities, so the postcode alone does not identify Gerard. Browse other postcodes in South Australia, or widen the search to every Australian postcode.