Home Postcode finder TAS Koonya Koonya postcode TAS Koonya is a locality in Tasmania covered by postcode 7187. Postcode 7187 State or territory Tasmania (TAS) Region Tasmania Add a free Koonya business listing Be the first listing in Koonya Common questionsWhat is the postcode for Koonya?Koonya, TAS has the postcode 7187.What state is Koonya in?Koonya is in Tasmania (TAS).Does postcode 7187 cover more than one suburb?No. Postcode 7187 covers Koonya only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.