seaview-downs postcode sa Home ›› Postcode Finder ›› SA ›› Seaview-Downs Seaview Downs local listingsThe suburb of Seaview Downs is located in SA and has a postcode of 5049. Free seaview downs business listing! Get the first free listing in seaview downs! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.