Home Postcodes by state QLD 4553 Postcode 4553 4553 is the postcode for 5 localities in QLD: Diamond Valley, Glenview, Mooloolah, Mooloolah Valley and Palmview. Localities with postcode 4553Diamond ValleyQLDGlenviewQLDMooloolahQLDMooloolah ValleyQLDPalmviewQLD Postcode 4553 State or territory Queensland (QLD) Localities 5 Council area Sunshine Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4552 · Postcode 4554