Home Postcode finder VIC Koonwarra Koonwarra postcode VIC Koonwarra is a locality in Victoria covered by postcode 3954. Postcode 3954 State or territory Victoria (VIC) Region Vic Far Country Add a free Koonwarra business listing Be the first listing in Koonwarra Common questionsWhat is the postcode for Koonwarra?Koonwarra, VIC has the postcode 3954.What state is Koonwarra in?Koonwarra is in Victoria (VIC).Does postcode 3954 cover more than one suburb?No. Postcode 3954 covers Koonwarra only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.