Home Postcode finder SA Oakbank Oakbank postcode SA Oakbank is a locality in South Australia covered by postcode 5243. Postcode 5243 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Oakbank business listing More business listings in Oakbank Businesses in OakbankEnviro-Net CanopiesADELAIDE HILLS · 0401 077 221Oakbank Area School154 Main St · 08 83987200Oakbank Hotel207 Onkaparinga Valley Rd, Oakbank South Australia 5243, Australia · +61 8 8388 4267 Common questionsWhat is the postcode for Oakbank?Oakbank, SA has the postcode 5243.What state is Oakbank in?Oakbank is in South Australia (SA).Does postcode 5243 cover more than one suburb?No. Postcode 5243 covers Oakbank only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in South Australia, or widen the search to every Australian postcode.