Home Postcode finder QLD Blackwater Blackwater postcode QLD Blackwater is a locality in Queensland covered by postcode 4717. Postcode 4717 State or territory Queensland (QLD) Region Central QLD Add a free Blackwater business listing More business listings in Blackwater Businesses in BlackwaterBlackwater Child Care Centre38 Elm StreetBlackwater North State SchoolWilliam St · 07 49805333Blackwater State High School26 Elm St · 07 49869555 Common questionsWhat is the postcode for Blackwater?Blackwater, QLD has the postcode 4717.What state is Blackwater in?Blackwater is in Queensland (QLD).Does postcode 4717 cover more than one suburb?No. Postcode 4717 covers Blackwater only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Queensland, or widen the search to every Australian postcode.