Home Postcode finder WA Willetton Willetton postcode WA Willetton is a locality in Western Australia covered by postcode 6155. Postcode 6155 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Willetton business listing More business listings in Willetton Businesses in Willetton89 Enterprises14 Gympie Way · 0894578888A&H Hair Stylist3/46 Rostrata Ave, Willetton WA 6155, Australia · 0431213651Advanced Smiles Dental Care5 300 Vahland Ave · 0892596008 Common questionsWhat is the postcode for Willetton?Willetton, WA has the postcode 6155.What state is Willetton in?Willetton is in Western Australia (WA).Does postcode 6155 cover more than one suburb?Yes. Postcode 6155 covers 4 localities, so the postcode alone does not identify Willetton. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.