Home Postcode finder SA Willow Banks Willow Banks postcode SA Willow Banks is a locality in South Australia covered by postcode 5253. Postcode 5253 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Willow Banks business listing Be the first listing in Willow Banks Common questionsWhat is the postcode for Willow Banks?Willow Banks, SA has the postcode 5253.What state is Willow Banks in?Willow Banks is in South Australia (SA).Does postcode 5253 cover more than one suburb?Yes. Postcode 5253 covers 25 localities, so the postcode alone does not identify Willow Banks. Browse other postcodes in South Australia, or widen the search to every Australian postcode.