Home Postcode finder VIC Tremont Tremont postcode VIC Tremont is a locality in Victoria covered by postcode 3785. Postcode 3785 State or territory Victoria (VIC) Region Ferntree Gully Add a free Tremont business listing Be the first listing in Tremont Common questionsWhat is the postcode for Tremont?Tremont, VIC has the postcode 3785.What state is Tremont in?Tremont is in Victoria (VIC).Does postcode 3785 cover more than one suburb?No. Postcode 3785 covers Tremont only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.