Home Postcode finder SA Fountain Fountain postcode SA Fountain is a locality in South Australia covered by postcode 5607. Postcode 5607 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Fountain business listing Be the first listing in Fountain Common questionsWhat is the postcode for Fountain?Fountain, SA has the postcode 5607.What state is Fountain in?Fountain is in South Australia (SA).Does postcode 5607 cover more than one suburb?Yes. Postcode 5607 covers 50 localities, so the postcode alone does not identify Fountain. Browse other postcodes in South Australia, or widen the search to every Australian postcode.