Home Postcodes by state VIC 3981 Postcode 3981 3981 is the postcode for 7 localities in VIC: Bayles, Catani, Dalmore, Heath Hill, Koo Wee Rup, Koo Wee Rup North and 1 more. Localities with postcode 3981BaylesVICCataniVICDalmoreVICHeath HillVICKoo Wee RupVICKoo Wee Rup NorthVICYannathanVIC Postcode 3981 State or territory Victoria (VIC) Localities 7 Council area Cardinia; Mainly Cardinia, partly Baw Baw Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3980 · Postcode 3984