Home Postcode finder WA Melville Melville postcode WA Melville is a locality in Western Australia covered by postcode 6156. Postcode 6156 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Melville business listing More business listings in Melville Businesses in MelvilleAllcredit Pty LimitedLevel 2 176 Leach Highway · 1300550112Fernwood Fitness4B Melville Square 248 Leach Highway · 0893307055Inner NurtureMelville WA 6156, Australia · 0000000000 Common questionsWhat is the postcode for Melville?Melville, WA has the postcode 6156.What state is Melville in?Melville is in Western Australia (WA).Does postcode 6156 cover more than one suburb?Yes. Postcode 6156 covers 4 localities, so the postcode alone does not identify Melville. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.