Home Postcode finder VIC Tarwin Lower Tarwin Lower postcode VIC Tarwin Lower is a locality in Victoria covered by postcode 3956. Postcode 3956 State or territory Victoria (VIC) Region Vic Far Country Add a free Tarwin Lower business listing More business listings in Tarwin Lower Businesses in Tarwin LowerTarwin Lower Primary School34 School Rd · 03 56635263 Common questionsWhat is the postcode for Tarwin Lower?Tarwin Lower, VIC has the postcode 3956.What state is Tarwin Lower in?Tarwin Lower is in Victoria (VIC).Does postcode 3956 cover more than one suburb?Yes. Postcode 3956 covers 9 localities, so the postcode alone does not identify Tarwin Lower. Browse other postcodes in Victoria, or widen the search to every Australian postcode.