Home Postcode finder VIC Castella Castella postcode VIC Castella is a locality in Victoria covered by postcode 3777. Postcode 3777 State or territory Victoria (VIC) Region Ringwood Add a free Castella business listing Be the first listing in Castella Common questionsWhat is the postcode for Castella?Castella, VIC has the postcode 3777.What state is Castella in?Castella is in Victoria (VIC).Does postcode 3777 cover more than one suburb?Yes. Postcode 3777 covers 8 localities, so the postcode alone does not identify Castella. Browse other postcodes in Victoria, or widen the search to every Australian postcode.