ardrossan postcode sa Home ›› Postcode Finder ›› SA ›› Ardrossan Ardrossan local listingsThe suburb of Ardrossan is located in SA and has a postcode of 5571. Free ardrossan business listing! 1Ardrossan Area School14 Second St 08 88373025 View more business listings in ardrossan Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.