Home Postcode finder VIC Koo Wee Rup North Koo Wee Rup North postcode VIC Koo Wee Rup North is a locality in Victoria covered by postcode 3981. Postcode 3981 State or territory Victoria (VIC) Region Frankston Add a free Koo Wee Rup North business listing Be the first listing in Koo Wee Rup North Common questionsWhat is the postcode for Koo Wee Rup North?Koo Wee Rup North, VIC has the postcode 3981.What state is Koo Wee Rup North in?Koo Wee Rup North is in Victoria (VIC).Does postcode 3981 cover more than one suburb?Yes. Postcode 3981 covers 7 localities, so the postcode alone does not identify Koo Wee Rup North. Browse other postcodes in Victoria, or widen the search to every Australian postcode.