Home Postcodes by state QLD 4019 Postcode 4019 4019 is the postcode for 5 localities in QLD: Clontarf, Clontarf Beach, Margate, Margate Beach and Woody Point. Localities with postcode 4019ClontarfQLDClontarf BeachQLDMargateQLDMargate BeachQLDWoody PointQLD Postcode 4019 State or territory Queensland (QLD) Localities 5 Council area Moreton Bay Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4018 · Postcode 4020