Home Postcode finder TAS Glenfern Glenfern postcode TAS Glenfern is a locality in Tasmania covered by postcode 7140. Postcode 7140 State or territory Tasmania (TAS) Region Tasmania Add a free Glenfern business listing Be the first listing in Glenfern Common questionsWhat is the postcode for Glenfern?Glenfern, TAS has the postcode 7140.What state is Glenfern in?Glenfern is in Tasmania (TAS).Does postcode 7140 cover more than one suburb?Yes. Postcode 7140 covers 48 localities, so the postcode alone does not identify Glenfern. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.