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