Home Postcode finder VIC Patterson Patterson postcode VIC Patterson is a locality in Victoria covered by postcode 3204. Postcode 3204 State or territory Victoria (VIC) Region Dandenong Add a free Patterson business listing Be the first listing in Patterson Common questionsWhat is the postcode for Patterson?Patterson, VIC has the postcode 3204.What state is Patterson in?Patterson is in Victoria (VIC).Does postcode 3204 cover more than one suburb?Yes. Postcode 3204 covers 4 localities, so the postcode alone does not identify Patterson. Browse other postcodes in Victoria, or widen the search to every Australian postcode.