Home Postcodes by state QLD 4118 Postcode 4118 4118 is the postcode for 5 localities in QLD: Browns Plains, Forestdale, Heritage Park, Hillcrest and Regents Park. Localities with postcode 4118Browns PlainsQLDForestdaleQLDHeritage ParkQLDHillcrestQLDRegents ParkQLD Postcode 4118 State or territory Queensland (QLD) Localities 5 Council area Logan Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4117 · Postcode 4119