Home Postcode finder QLD Gatton College Gatton College postcode QLD Gatton College is a locality in Queensland covered by postcode 4345. Postcode 4345 State or territory Queensland (QLD) Region Western Suburbs Add a free Gatton College business listing Be the first listing in Gatton College Common questionsWhat is the postcode for Gatton College?Gatton College, QLD has the postcode 4345.What state is Gatton College in?Gatton College is in Queensland (QLD).Does postcode 4345 cover more than one suburb?No. Postcode 4345 covers Gatton College only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Queensland, or widen the search to every Australian postcode.