Home Postcodes by state NSW 2147 Postcode 2147 2147 is the postcode for 4 localities in NSW: Kings Langley, Lalor Park, Seven Hills and Seven Hills West. Localities with postcode 2147Kings LangleyNSWLalor ParkNSWSeven HillsNSWSeven Hills WestNSW Postcode 2147 State or territory New South Wales (NSW) Localities 4 Council area Blacktown Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2146 · Postcode 2148