Home Postcode finder VIC Gainsborough Gainsborough postcode VIC Gainsborough is a locality in Victoria covered by postcode 3822. Postcode 3822 State or territory Victoria (VIC) Region Vic Far Country Add a free Gainsborough business listing Be the first listing in Gainsborough Common questionsWhat is the postcode for Gainsborough?Gainsborough, VIC has the postcode 3822.What state is Gainsborough in?Gainsborough is in Victoria (VIC).Does postcode 3822 cover more than one suburb?Yes. Postcode 3822 covers 3 localities, so the postcode alone does not identify Gainsborough. Browse other postcodes in Victoria, or widen the search to every Australian postcode.