Postcode 6027 This postcode covers more than one locality. Which one are you after? Joondalup Western Australia LGA: Joondalup Beldon Western Australia LGA: Joondalup Connolly Western Australia LGA: Joondalup Edgewater Western Australia LGA: Joondalup Heathridge Western Australia LGA: Joondalup Mullaloo Western Australia LGA: Joondalup Ocean Reef Western Australia LGA: Joondalup