Home Postcode finder QLD Hornet Bank Hornet Bank postcode QLD Hornet Bank is a locality in Queensland covered by postcode 4420. Postcode 4420 State or territory Queensland (QLD) Region Toowoomba Region Add a free Hornet Bank business listing Be the first listing in Hornet Bank Common questionsWhat is the postcode for Hornet Bank?Hornet Bank, QLD has the postcode 4420.What state is Hornet Bank in?Hornet Bank is in Queensland (QLD).Does postcode 4420 cover more than one suburb?Yes. Postcode 4420 covers 8 localities, so the postcode alone does not identify Hornet Bank. Browse other postcodes in Queensland, or widen the search to every Australian postcode.