Home Postcode finder SA Waterloo Corner Waterloo Corner postcode SA Waterloo Corner is a locality in South Australia covered by postcode 5110. Postcode 5110 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Waterloo Corner business listing Be the first listing in Waterloo Corner Common questionsWhat is the postcode for Waterloo Corner?Waterloo Corner, SA has the postcode 5110.What state is Waterloo Corner in?Waterloo Corner is in South Australia (SA).Does postcode 5110 cover more than one suburb?Yes. Postcode 5110 covers 6 localities, so the postcode alone does not identify Waterloo Corner. Browse other postcodes in South Australia, or widen the search to every Australian postcode.