Home Postcode finder QLD Yorkeys Knob Yorkeys Knob postcode QLD Yorkeys Knob is a locality in Queensland covered by postcode 4878. Postcode 4878 State or territory Queensland (QLD) Region North QLD Add a free Yorkeys Knob business listing More business listings in Yorkeys Knob Businesses in Yorkeys KnobYorkeys Knob State SchoolClinton St · 07 40800333 Common questionsWhat is the postcode for Yorkeys Knob?Yorkeys Knob, QLD has the postcode 4878.What state is Yorkeys Knob in?Yorkeys Knob is in Queensland (QLD).Does postcode 4878 cover more than one suburb?Yes. Postcode 4878 covers 6 localities, so the postcode alone does not identify Yorkeys Knob. Browse other postcodes in Queensland, or widen the search to every Australian postcode.