Home Postcode finder SA Maggea Maggea postcode SA Maggea is a locality in South Australia covered by postcode 5311. Postcode 5311 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Maggea business listing Be the first listing in Maggea Common questionsWhat is the postcode for Maggea?Maggea, SA has the postcode 5311.What state is Maggea in?Maggea is in South Australia (SA).Does postcode 5311 cover more than one suburb?Yes. Postcode 5311 covers 13 localities, so the postcode alone does not identify Maggea. Browse other postcodes in South Australia, or widen the search to every Australian postcode.