Home Postcode finder VIC Cokum Cokum postcode VIC Cokum is a locality in Victoria covered by postcode 3542. Postcode 3542 State or territory Victoria (VIC) Region Vic Far Country Add a free Cokum business listing Be the first listing in Cokum Common questionsWhat is the postcode for Cokum?Cokum, VIC has the postcode 3542.What state is Cokum in?Cokum is in Victoria (VIC).Does postcode 3542 cover more than one suburb?Yes. Postcode 3542 covers 3 localities, so the postcode alone does not identify Cokum. Browse other postcodes in Victoria, or widen the search to every Australian postcode.