Home Postcode finder WA West Swan West Swan postcode WA West Swan is a locality in Western Australia covered by postcode 6055. Postcode 6055 State or territory Western Australia (WA) Region North West Suburbs Add a free West Swan business listing More business listings in West Swan Businesses in West SwanCaversham Primary School65 Coast Rd · 08 92502711Culunga Aboriginal SchoolLot 104 Harrow St · 08 92501214Riverlands School299 Arthur St · 08 92502472 Common questionsWhat is the postcode for West Swan?West Swan, WA has the postcode 6055.What state is West Swan in?West Swan is in Western Australia (WA).Does postcode 6055 cover more than one suburb?Yes. Postcode 6055 covers 6 localities, so the postcode alone does not identify West Swan. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.