Home Postcode finder VIC Koondrook Koondrook postcode VIC Koondrook is a locality in Victoria covered by postcode 3580. Postcode 3580 State or territory Victoria (VIC) Region Vic Far Country Add a free Koondrook business listing More business listings in Koondrook Businesses in KoondrookKoondrook Primary School9 Punt Rd · 03 54532428 Common questionsWhat is the postcode for Koondrook?Koondrook, VIC has the postcode 3580.What state is Koondrook in?Koondrook is in Victoria (VIC).Does postcode 3580 cover more than one suburb?No. Postcode 3580 covers Koondrook only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.