Home Postcode finder SA Mount Charles Mount Charles postcode SA Mount Charles is a locality in South Australia covered by postcode 5267. Postcode 5267 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Mount Charles business listing Be the first listing in Mount Charles Common questionsWhat is the postcode for Mount Charles?Mount Charles, SA has the postcode 5267.What state is Mount Charles in?Mount Charles is in South Australia (SA).Does postcode 5267 cover more than one suburb?Yes. Postcode 5267 covers 12 localities, so the postcode alone does not identify Mount Charles. Browse other postcodes in South Australia, or widen the search to every Australian postcode.