Home Postcode finder QLD Eaton Eaton postcode QLD Eaton is a locality in Queensland covered by postcode 4860. Postcode 4860 State or territory Queensland (QLD) Region North QLD Add a free Eaton business listing Be the first listing in Eaton Common questionsWhat is the postcode for Eaton?Eaton, QLD has the postcode 4860.What state is Eaton in?Eaton is in Queensland (QLD).Does postcode 4860 cover more than one suburb?Yes. Postcode 4860 covers 37 localities, so the postcode alone does not identify Eaton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.