Home Postcode finder TAS York Plains York Plains postcode TAS York Plains is a locality in Tasmania covered by postcode 7120. Postcode 7120 State or territory Tasmania (TAS) Region Tasmania Add a free York Plains business listing More business listings in York Plains Businesses in York PlainsBridget Walch Civil Marriage Celebrant Tasmania129 Greggs Road, York Plains TAS, Australia · 408586140 Common questionsWhat is the postcode for York Plains?York Plains, TAS has the postcode 7120.What state is York Plains in?York Plains is in Tasmania (TAS).Does postcode 7120 cover more than one suburb?Yes. Postcode 7120 covers 19 localities, so the postcode alone does not identify York Plains. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.