Home Postcode finder QLD Injune Injune postcode QLD Injune is a locality in Queensland covered by postcode 4454. Postcode 4454 State or territory Queensland (QLD) Region Toowoomba Region Add a free Injune business listing More business listings in Injune Businesses in InjuneArcadia Valley State SchoolArcadia Valley via · 07 46267110Injune State SchoolCnr Hutton & 4th Ave · 07 46260222 Common questionsWhat is the postcode for Injune?Injune, QLD has the postcode 4454.What state is Injune in?Injune is in Queensland (QLD).Does postcode 4454 cover more than one suburb?Yes. Postcode 4454 covers 11 localities, so the postcode alone does not identify Injune. Browse other postcodes in Queensland, or widen the search to every Australian postcode.