Home Postcode finder SA Morgan Morgan postcode SA Morgan 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 Morgan business listing More business listings in Morgan Businesses in MorganMorgan Primary SchoolFourth St · 08 85402102 Common questionsWhat is the postcode for Morgan?Morgan, SA has the postcode 5320.What state is Morgan in?Morgan 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 Morgan. Browse other postcodes in South Australia, or widen the search to every Australian postcode.