Home Postcode finder WA Cocklebiddy Cocklebiddy postcode WA Cocklebiddy is a locality in Western Australia covered by postcode 6443. Postcode 6443 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Cocklebiddy business listing Be the first listing in Cocklebiddy Common questionsWhat is the postcode for Cocklebiddy?Cocklebiddy, WA has the postcode 6443.What state is Cocklebiddy in?Cocklebiddy is in Western Australia (WA).Does postcode 6443 cover more than one suburb?Yes. Postcode 6443 covers 11 localities, so the postcode alone does not identify Cocklebiddy. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.