Home Postcodes by state QLD Thursday Island Thursday Island postcode QLD Thursday Island is a locality in Queensland covered by postcode 4875. Postcode 4875 State or territory Queensland (QLD) Region North QLD Add a free Thursday Island business listing More business listings in Thursday Island Businesses in Thursday IslandOur Lady of the Sacred Heart SchoolDouglas St · 07 40692203Tagai State CollegeStephen Island via · 07 40694106Tagai State College26-48 Summer St · 07 40692279 Common questionsWhat is the postcode for Thursday Island?Thursday Island, QLD has the postcode 4875.What state is Thursday Island in?Thursday Island is in Queensland (QLD).Does postcode 4875 cover more than one suburb?Yes. Postcode 4875 covers 17 localities, so the postcode alone does not identify Thursday Island. Browse other postcodes in Queensland, or widen the search to every Australian postcode.