gawler-south postcode sa Home ›› Postcode Finder ›› SA ›› Gawler-South Gawler South local listingsThe suburb of Gawler South is located in SA and has a postcode of 5118. Free gawler south business listing! Get the first free listing in gawler south! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.