Home Postcode finder SA Fitzgerald Bay Fitzgerald Bay postcode SA Fitzgerald Bay is a locality in South Australia covered by postcode 5600. Postcode 5600 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Fitzgerald Bay business listing Be the first listing in Fitzgerald Bay Common questionsWhat is the postcode for Fitzgerald Bay?Fitzgerald Bay, SA has the postcode 5600.What state is Fitzgerald Bay in?Fitzgerald Bay is in South Australia (SA).Does postcode 5600 cover more than one suburb?Yes. Postcode 5600 covers 13 localities, so the postcode alone does not identify Fitzgerald Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.