Home Postcode finder WA West Island Cocos (Keeling) Islands West Island Cocos (Keeling) Islands postcode WA West Island Cocos (Keeling) Islands is a locality in Western Australia covered by postcode 6799. Postcode 6799 State or territory Western Australia (WA) Region North West Suburbs Add a free West Island Cocos (Keeling) Islands business listing Be the first listing in West Island Cocos (Keeling) Islands Common questionsWhat is the postcode for West Island Cocos (Keeling) Islands?West Island Cocos (Keeling) Islands, WA has the postcode 6799.What state is West Island Cocos (Keeling) Islands in?West Island Cocos (Keeling) Islands is in Western Australia (WA).Does postcode 6799 cover more than one suburb?Yes. Postcode 6799 covers 2 localities, so the postcode alone does not identify West Island Cocos (Keeling) Islands. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.