Home Postcode finder SA Keyneton Keyneton postcode SA Keyneton is a locality in South Australia covered by postcode 5353. Postcode 5353 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Keyneton business listing More business listings in Keyneton Businesses in KeynetonKeyneton Primary SchoolHenschke Rd · 08 85648258 Common questionsWhat is the postcode for Keyneton?Keyneton, SA has the postcode 5353.What state is Keyneton in?Keyneton is in South Australia (SA).Does postcode 5353 cover more than one suburb?Yes. Postcode 5353 covers 11 localities, so the postcode alone does not identify Keyneton. Browse other postcodes in South Australia, or widen the search to every Australian postcode.