Home Postcodes by state QLD 4559 Postcode 4559 4559 is the postcode for 4 localities in QLD: Diddillibah, Kiels Mountain, West Woombye and Woombye. Localities with postcode 4559DiddillibahQLDKiels MountainQLDWest WoombyeQLDWoombyeQLD Postcode 4559 State or territory Queensland (QLD) Localities 4 Council area Sunshine Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4558 · Postcode 4560