Home Postcode finder SA Mount Magnificent Mount Magnificent postcode SA Mount Magnificent is a locality in South Australia covered by postcode 5210. Postcode 5210 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Mount Magnificent business listing Be the first listing in Mount Magnificent Common questionsWhat is the postcode for Mount Magnificent?Mount Magnificent, SA has the postcode 5210.What state is Mount Magnificent in?Mount Magnificent is in South Australia (SA).Does postcode 5210 cover more than one suburb?Yes. Postcode 5210 covers 3 localities, so the postcode alone does not identify Mount Magnificent. Browse other postcodes in South Australia, or widen the search to every Australian postcode.