Home Postcodes by state QLD 4101 Postcode 4101 4101 is the postcode for 3 localities in QLD: Highgate Hill, South Brisbane and West End. Localities with postcode 4101Highgate HillQLDSouth BrisbaneQLDWest EndQLD Postcode 4101 State or territory Queensland (QLD) Localities 3 Council area Brisbane Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4078 · Postcode 4102