Home Postcode finder VIC Blackwood Blackwood postcode VIC Blackwood is a locality in Victoria covered by postcode 3458. Postcode 3458 State or territory Victoria (VIC) Region Vic Far Country Add a free Blackwood business listing Be the first listing in Blackwood Common questionsWhat is the postcode for Blackwood?Blackwood, VIC has the postcode 3458.What state is Blackwood in?Blackwood is in Victoria (VIC).Does postcode 3458 cover more than one suburb?Yes. Postcode 3458 covers 9 localities, so the postcode alone does not identify Blackwood. Browse other postcodes in Victoria, or widen the search to every Australian postcode.