Home Postcode finder TAS Liffey Liffey postcode TAS Liffey is a locality in Tasmania covered by postcode 7301. Postcode 7301 State or territory Tasmania (TAS) Region Tasmania Add a free Liffey business listing Be the first listing in Liffey Common questionsWhat is the postcode for Liffey?Liffey, TAS has the postcode 7301.What state is Liffey in?Liffey is in Tasmania (TAS).Does postcode 7301 cover more than one suburb?Yes. Postcode 7301 covers 5 localities, so the postcode alone does not identify Liffey. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.