Home Postcode finder VIC Keysborough Keysborough postcode VIC Keysborough is a locality in Victoria covered by postcode 3173. Postcode 3173 State or territory Victoria (VIC) Region Dandenong Add a free Keysborough business listing More business listings in Keysborough Businesses in KeysboroughAccounting Services12A Isaac Road · 0417377794Aimc Australian Visas Keysborough Victoria 3173 Aust · 0423 469 569Alderbrook Plumbing27 Keys Road · 0397983375 Common questionsWhat is the postcode for Keysborough?Keysborough, VIC has the postcode 3173.What state is Keysborough in?Keysborough is in Victoria (VIC).Does postcode 3173 cover more than one suburb?No. Postcode 3173 covers Keysborough only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.