Home Postcode finder VIC Earlston Earlston postcode VIC Earlston is a locality in Victoria covered by postcode 3669. Postcode 3669 State or territory Victoria (VIC) Region Vic Far Country Add a free Earlston business listing Be the first listing in Earlston Common questionsWhat is the postcode for Earlston?Earlston, VIC has the postcode 3669.What state is Earlston in?Earlston is in Victoria (VIC).Does postcode 3669 cover more than one suburb?Yes. Postcode 3669 covers 11 localities, so the postcode alone does not identify Earlston. Browse other postcodes in Victoria, or widen the search to every Australian postcode.