Home Postcode finder SA Findon Findon postcode SA Findon is a locality in South Australia covered by postcode 5023. Postcode 5023 State or territory South Australia (SA) Region Adelaide Add a free Findon business listing More business listings in Findon Businesses in FindonAdelaide Ink PlusGrange Rd · 61 8 82431500Adelaide Ink Plus - Ink Cartridges Grange Rd · 61 8 82431500Adelaide InkplusShop A245 · 61882431500 Common questionsWhat is the postcode for Findon?Findon, SA has the postcode 5023.What state is Findon in?Findon is in South Australia (SA).Does postcode 5023 cover more than one suburb?Yes. Postcode 5023 covers 3 localities, so the postcode alone does not identify Findon. Browse other postcodes in South Australia, or widen the search to every Australian postcode.