middleton postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Middleton Middleton local listingsThe suburb of Middleton is located in QLD and has a postcode of 4735. Free middleton business listing! 1Opal jewelry59 Elderslie St, Middleton Winton, QLD 4735, Australia 8055749888 View more business listings in middleton Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.