Home Postcode finder QLD Middleton Middleton postcode QLD Middleton is a locality in Queensland covered by postcode 4735. Postcode 4735 State or territory Queensland (QLD) Region Central QLD Add a free Middleton business listing More business listings in Middleton Businesses in MiddletonOpal jewelry59 Elderslie St, Middleton Winton, QLD 4735, Australia · 8055749888 Common questionsWhat is the postcode for Middleton?Middleton, QLD has the postcode 4735.What state is Middleton in?Middleton is in Queensland (QLD).Does postcode 4735 cover more than one suburb?Yes. Postcode 4735 covers 4 localities, so the postcode alone does not identify Middleton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.