saibai-island postcode qld Home ›› Postcode Finder ›› QLD ›› Saibai-Island Saibai Island local listingsThe suburb of Saibai Island is located in QLD and has a postcode of 4875. Free saibai island business listing! Get the first free listing in saibai island! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.