blackwater postcode qld Home ›› Postcode Finder ›› QLD ›› Blackwater Blackwater local listingsThe suburb of Blackwater is located in QLD and has a postcode of 4717. Free blackwater business listing! 1Blackwater State High School26 Elm St 07 498695552Blackwater North State SchoolWilliam St 07 498053333Blackwater State School11 Wey St 07 49860111 View more business listings in blackwater Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.