Home Postcodes by state QLD 4226 Postcode 4226 4226 is the postcode for 3 localities in QLD: Clear Island Waters, Merrimac and Robina. Localities with postcode 4226Clear Island WatersQLDMerrimacQLDRobinaQLD Postcode 4226 State or territory Queensland (QLD) Localities 3 Council area Gold Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4225 · Postcode 4227