Home Postcodes by state QLD 4890 Postcode 4890 4890 is the postcode for 2 localities in QLD: Howitt and Normanton. Localities with postcode 4890HowittQLDNormantonQLD Postcode 4890 State or territory Queensland (QLD) Localities 2 Council area Carpentaria Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4888 · Postcode 4891