Home Postcode finder VIC Great Western Great Western postcode VIC Great Western is a locality in Victoria covered by postcode 3374. Postcode 3374 State or territory Victoria (VIC) Region Vic Far Country Add a free Great Western business listing More business listings in Great Western Businesses in Great WesternGreat Western Primary School45-49 Stephenson St · 03 53562235 Common questionsWhat is the postcode for Great Western?Great Western, VIC has the postcode 3374.What state is Great Western in?Great Western is in Victoria (VIC).Does postcode 3374 cover more than one suburb?No. Postcode 3374 covers Great Western only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.