Home Postcode finder QLD Orange Hill Orange Hill postcode QLD Orange Hill is a locality in Queensland covered by postcode 4455. Postcode 4455 State or territory Queensland (QLD) Region Toowoomba Region Add a free Orange Hill business listing Be the first listing in Orange Hill Common questionsWhat is the postcode for Orange Hill?Orange Hill, QLD has the postcode 4455.What state is Orange Hill in?Orange Hill is in Queensland (QLD).Does postcode 4455 cover more than one suburb?Yes. Postcode 4455 covers 19 localities, so the postcode alone does not identify Orange Hill. Browse other postcodes in Queensland, or widen the search to every Australian postcode.