Home Postcodes by state QLD 4221 Postcode 4221 4221 is the postcode for 2 localities in QLD: Elanora and Palm Beach. Localities with postcode 4221ElanoraQLDPalm BeachQLD Postcode 4221 State or territory Queensland (QLD) Localities 2 Council area Gold Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4220 · Postcode 4222