Home Postcode finder WA Cue Cue postcode WA Cue is a locality in Western Australia covered by postcode 6640. Postcode 6640 State or territory Western Australia (WA) Region North West Suburbs Add a free Cue business listing More business listings in Cue Businesses in CueCue Primary SchoolSimpson Rd · 08 99631010 Common questionsWhat is the postcode for Cue?Cue, WA has the postcode 6640.What state is Cue in?Cue is in Western Australia (WA).Does postcode 6640 cover more than one suburb?Yes. Postcode 6640 covers 5 localities, so the postcode alone does not identify Cue. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.