waterfall-gully postcode sa Home ›› Postcode Finder ›› SA ›› Waterfall-Gully Waterfall Gully local listingsThe suburb of Waterfall Gully is located in SA and has a postcode of 5066. Free waterfall gully business listing! Get the first free listing in waterfall gully! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.