oakbank postcode sa Home ›› Postcode Finder ›› SA ›› Oakbank Oakbank local listingsThe suburb of Oakbank is located in SA and has a postcode of 5243. Free oakbank business listing! 1Enviro-Net CanopiesADELAIDE HILLS 0401 077 2212Oakbank Area School154 Main St 08 83987200 View more business listings in oakbank Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.