Home Postcode finder VIC Gillum Gillum postcode VIC Gillum is a locality in Victoria covered by postcode 3858. Postcode 3858 State or territory Victoria (VIC) Region Vic Far Country Add a free Gillum business listing Be the first listing in Gillum Common questionsWhat is the postcode for Gillum?Gillum, VIC has the postcode 3858.What state is Gillum in?Gillum is in Victoria (VIC).Does postcode 3858 cover more than one suburb?Yes. Postcode 3858 covers 20 localities, so the postcode alone does not identify Gillum. Browse other postcodes in Victoria, or widen the search to every Australian postcode.