Home Postcodes by state QLD 4821 Postcode 4821 4821 is the postcode for 5 localities in QLD: Dutton River, Hughenden, Porcupine, Stamford and Tangorin. Localities with postcode 4821Dutton RiverQLDHughendenQLDPorcupineQLDStamfordQLDTangorinQLD Postcode 4821 State or territory Queensland (QLD) Localities 5 Council area Flinders Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4820 · Postcode 4822