Home Postcode finder TAS London Lakes London Lakes postcode TAS London Lakes is a locality in Tasmania covered by postcode 7140. Postcode 7140 State or territory Tasmania (TAS) Region Tasmania Add a free London Lakes business listing Be the first listing in London Lakes Common questionsWhat is the postcode for London Lakes?London Lakes, TAS has the postcode 7140.What state is London Lakes in?London Lakes 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 London Lakes. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.