Home Postcode finder QLD New Chum New Chum postcode QLD New Chum is a locality in Queensland covered by postcode 4303. Postcode 4303 State or territory Queensland (QLD) Region Western Suburbs Add a free New Chum business listing Be the first listing in New Chum Common questionsWhat is the postcode for New Chum?New Chum, QLD has the postcode 4303.What state is New Chum in?New Chum is in Queensland (QLD).Does postcode 4303 cover more than one suburb?Yes. Postcode 4303 covers 3 localities, so the postcode alone does not identify New Chum. Browse other postcodes in Queensland, or widen the search to every Australian postcode.