port-gawler postcode sa Home ›› Postcode Finder ›› SA ›› Port-Gawler Port Gawler local listingsThe suburb of Port Gawler is located in SA and has a postcode of 5501. Free port gawler business listing! Get the first free listing in port gawler! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.