Home Postcode finder VIC Preston South Preston South postcode VIC Preston South is a locality in Victoria covered by postcode 3072. Postcode 3072 State or territory Victoria (VIC) Region Preston Add a free Preston South business listing Be the first listing in Preston South Common questionsWhat is the postcode for Preston South?Preston South, VIC has the postcode 3072.What state is Preston South in?Preston South is in Victoria (VIC).Does postcode 3072 cover more than one suburb?Yes. Postcode 3072 covers 7 localities, so the postcode alone does not identify Preston South. Browse other postcodes in Victoria, or widen the search to every Australian postcode.