Home Postcode finder WA West Beach West Beach postcode WA West Beach is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free West Beach business listing More business listings in West Beach Businesses in West BeachOur Lady Star of the Sea Primary School4 Giles St · 08 90715195 Common questionsWhat is the postcode for West Beach?West Beach, WA has the postcode 6450.What state is West Beach in?West Beach is in Western Australia (WA).Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify West Beach. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.