Home Postcode finder VIC Koonoomoo Koonoomoo postcode VIC Koonoomoo is a locality in Victoria covered by postcode 3644. Postcode 3644 State or territory Victoria (VIC) Region Vic Far Country Add a free Koonoomoo business listing Be the first listing in Koonoomoo Common questionsWhat is the postcode for Koonoomoo?Koonoomoo, VIC has the postcode 3644.What state is Koonoomoo in?Koonoomoo is in Victoria (VIC).Does postcode 3644 cover more than one suburb?Yes. Postcode 3644 covers 7 localities, so the postcode alone does not identify Koonoomoo. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Victoria, or widen the search to every Australian postcode.