Home Postcodes by state QLD 4021 Postcode 4021 4021 is the postcode for Kippa-Ring, QLD. Localities with postcode 4021Kippa-RingQLD Postcode 4021 State or territory Queensland (QLD) Localities 1 Council area Moreton Bay Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4020 · Postcode 4022