Home Postcode finder VIC Cowangie Cowangie postcode VIC Cowangie is a locality in Victoria covered by postcode 3506. Postcode 3506 State or territory Victoria (VIC) Region Vic Far Country Add a free Cowangie business listing Be the first listing in Cowangie Common questionsWhat is the postcode for Cowangie?Cowangie, VIC has the postcode 3506.What state is Cowangie in?Cowangie is in Victoria (VIC).Does postcode 3506 cover more than one suburb?No. Postcode 3506 covers Cowangie only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.