blackwater postcode qldru Home ›› Postcode Finder ›› QLDRU ›› Blackwater Blackwater local listingsThe suburb of Blackwater is located in QLD and has a postcode of 4717. Free blackwater business listing! 1Blackwater Child Care Centre38 Elm Street 2Blackwater State School11 Wey St 07 498601113Blackwater State High School26 Elm St 07 49869555 View more business listings in blackwater Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.