Home Postcode finder VIC Irishtown Irishtown postcode VIC Irishtown is a locality in Victoria covered by postcode 3451. Postcode 3451 State or territory Victoria (VIC) Region Vic Far Country Add a free Irishtown business listing Be the first listing in Irishtown Common questionsWhat is the postcode for Irishtown?Irishtown, VIC has the postcode 3451.What state is Irishtown in?Irishtown is in Victoria (VIC).Does postcode 3451 cover more than one suburb?Yes. Postcode 3451 covers 16 localities, so the postcode alone does not identify Irishtown. Browse other postcodes in Victoria, or widen the search to every Australian postcode.