Home Postcode finder TAS Tunnel Tunnel postcode TAS Tunnel is a locality in Tasmania covered by postcode 7254. Postcode 7254 State or territory Tasmania (TAS) Region Tasmania Add a free Tunnel business listing Be the first listing in Tunnel Common questionsWhat is the postcode for Tunnel?Tunnel, TAS has the postcode 7254.What state is Tunnel in?Tunnel is in Tasmania (TAS).Does postcode 7254 cover more than one suburb?Yes. Postcode 7254 covers 7 localities, so the postcode alone does not identify Tunnel. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.