Home Postcode finder QLD Dalby Dalby postcode QLD Dalby is a locality in Queensland covered by postcode 4405. Postcode 4405 State or territory Queensland (QLD) Region Toowoomba Region Add a free Dalby business listing More business listings in Dalby Businesses in Dalby043 Split Installations - Heating And Air Conditio20 James Cook Drive · 0429988577Dalby Christian School2a Mary St · 07 46724222Dalby South State SchoolCnr Owen and Bunya Streets · 07 46723888 Common questionsWhat is the postcode for Dalby?Dalby, QLD has the postcode 4405.What state is Dalby in?Dalby is in Queensland (QLD).Does postcode 4405 cover more than one suburb?Yes. Postcode 4405 covers 11 localities, so the postcode alone does not identify Dalby. Browse other postcodes in Queensland, or widen the search to every Australian postcode.