Home Postcodes by state QLD 4109 Postcode 4109 4109 is the postcode for 5 localities in QLD: Macgregor, Robertson, Sunnybank, Sunnybank Hills and Sunnybank South. Localities with postcode 4109MacgregorQLDRobertsonQLDSunnybankQLDSunnybank HillsQLDSunnybank SouthQLD Postcode 4109 State or territory Queensland (QLD) Localities 5 Council area Brisbane Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4108 · Postcode 4110