Home Postcode finder VIC Eureka Eureka postcode VIC Eureka is a locality in Victoria covered by postcode 3350. Postcode 3350 State or territory Victoria (VIC) Region Vic Country Add a free Eureka business listing Be the first listing in Eureka Common questionsWhat is the postcode for Eureka?Eureka, VIC has the postcode 3350.What state is Eureka in?Eureka is in Victoria (VIC).Does postcode 3350 cover more than one suburb?Yes. Postcode 3350 covers 21 localities, so the postcode alone does not identify Eureka. Browse other postcodes in Victoria, or widen the search to every Australian postcode.