Home Postcode finder QLD Yangan Yangan postcode QLD Yangan is a locality in Queensland covered by postcode 4371. Postcode 4371 State or territory Queensland (QLD) Region Toowoomba Region Add a free Yangan business listing More business listings in Yangan Businesses in YanganYangan State School51 King St · 07 46648224 Common questionsWhat is the postcode for Yangan?Yangan, QLD has the postcode 4371.What state is Yangan in?Yangan is in Queensland (QLD).Does postcode 4371 cover more than one suburb?Yes. Postcode 4371 covers 3 localities, so the postcode alone does not identify Yangan. Browse other postcodes in Queensland, or widen the search to every Australian postcode.