Home Postcode finder QLD South Nanango South Nanango postcode QLD South Nanango is a locality in Queensland covered by postcode 4615. Postcode 4615 State or territory Queensland (QLD) Region Toowoomba Region Add a free South Nanango business listing Be the first listing in South Nanango Common questionsWhat is the postcode for South Nanango?South Nanango, QLD has the postcode 4615.What state is South Nanango in?South Nanango is in Queensland (QLD).Does postcode 4615 cover more than one suburb?Yes. Postcode 4615 covers 19 localities, so the postcode alone does not identify South Nanango. Browse other postcodes in Queensland, or widen the search to every Australian postcode.