Home Postcode finder SA Lowbank Lowbank postcode SA Lowbank is a locality in South Australia covered by postcode 5330. Postcode 5330 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Lowbank business listing Be the first listing in Lowbank Common questionsWhat is the postcode for Lowbank?Lowbank, SA has the postcode 5330.What state is Lowbank in?Lowbank is in South Australia (SA).Does postcode 5330 cover more than one suburb?Yes. Postcode 5330 covers 15 localities, so the postcode alone does not identify Lowbank. Browse other postcodes in South Australia, or widen the search to every Australian postcode.