Home Postcode finder VIC Narbethong Narbethong postcode VIC Narbethong is a locality in Victoria covered by postcode 3778. Postcode 3778 State or territory Victoria (VIC) Region Ringwood Add a free Narbethong business listing More business listings in Narbethong Businesses in NarbethongPreconliving645 Maroondah Hwy · (03) 5963 7035 Common questionsWhat is the postcode for Narbethong?Narbethong, VIC has the postcode 3778.What state is Narbethong in?Narbethong is in Victoria (VIC).Does postcode 3778 cover more than one suburb?Yes. Postcode 3778 covers 2 localities, so the postcode alone does not identify Narbethong. Browse other postcodes in Victoria, or widen the search to every Australian postcode.