cygnet-river postcode sa Home ›› Postcode Finder ›› SA ›› Cygnet-River Cygnet River local listingsThe suburb of Cygnet River is located in SA and has a postcode of 5223. Free cygnet river business listing! Get the first free listing in cygnet river! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.