Home Postcode finder SA Beaumonts Beaumonts postcode SA Beaumonts is a locality in South Australia covered by postcode 5320. Postcode 5320 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Beaumonts business listing Be the first listing in Beaumonts Common questionsWhat is the postcode for Beaumonts?Beaumonts, SA has the postcode 5320.What state is Beaumonts in?Beaumonts is in South Australia (SA).Does postcode 5320 cover more than one suburb?Yes. Postcode 5320 covers 13 localities, so the postcode alone does not identify Beaumonts. Browse other postcodes in South Australia, or widen the search to every Australian postcode.