Home Postcodes by state QLD 4573 Postcode 4573 4573 is the postcode for 7 localities in QLD: Coolum Beach, Marcus Beach, Mount Coolum, Peregian Beach, Peregian Springs, Point Arkwright and 1 more. Localities with postcode 4573Coolum BeachQLDMarcus BeachQLDMount CoolumQLDPeregian BeachQLDPeregian SpringsQLDPoint ArkwrightQLDYaroombaQLD Postcode 4573 State or territory Queensland (QLD) Localities 7 Council area Sunshine Coast; Noosa; Mainly Noosa, partly Sunshine Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4572 · Postcode 4574