Home Postcode finder QLD Maxwelton Maxwelton postcode QLD Maxwelton is a locality in Queensland covered by postcode 4822. Postcode 4822 State or territory Queensland (QLD) Region North QLD Add a free Maxwelton business listing Be the first listing in Maxwelton Common questionsWhat is the postcode for Maxwelton?Maxwelton, QLD has the postcode 4822.What state is Maxwelton in?Maxwelton is in Queensland (QLD).Does postcode 4822 cover more than one suburb?Yes. Postcode 4822 covers 9 localities, so the postcode alone does not identify Maxwelton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.