Home Postcodes by state QLD 4064 Postcode 4064 4064 is the postcode for 2 localities in QLD: Milton and Paddington. Localities with postcode 4064MiltonQLDPaddingtonQLD Postcode 4064 State or territory Queensland (QLD) Localities 2 Council area Brisbane Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4061 · Postcode 4065