Home Postcode finder QLD Sugarloaf Sugarloaf postcode QLD Sugarloaf is a locality in Queensland covered by postcode 4380. Postcode 4380 State or territory Queensland (QLD) Region Toowoomba Region Add a free Sugarloaf business listing Be the first listing in Sugarloaf Common questionsWhat is the postcode for Sugarloaf?Sugarloaf, QLD has the postcode 4380.What state is Sugarloaf in?Sugarloaf is in Queensland (QLD).Does postcode 4380 cover more than one suburb?Yes. Postcode 4380 covers 19 localities, so the postcode alone does not identify Sugarloaf. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Queensland, or widen the search to every Australian postcode.