Home Postcodes by state VIC 3785 Postcode 3785 3785 is the postcode for Tremont, VIC. Localities with postcode 3785TremontVIC Postcode 3785 State or territory Victoria (VIC) Localities 1 Council area Yarra Ranges Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3783 · Postcode 3786