riordanvale postcode qld Home ›› Postcode Finder ›› QLD ›› Riordanvale Riordanvale local listingsThe suburb of Riordanvale is located in QLD and has a postcode of 4800. Free riordanvale business listing! Get the first free listing in riordanvale! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.