Home Postcodes by state NSW 2171 Postcode 2171 2171 is the postcode for 8 localities in NSW: Carnes Hill, Cecil Hills, Elizabeth Hills, Horningsea Park, Hoxton Park, Len Waters Estate and 2 more. Localities with postcode 2171Carnes HillNSWCecil HillsNSWElizabeth HillsNSWHorningsea ParkNSWHoxton ParkNSWLen Waters EstateNSWMiddleton GrangeNSWWest HoxtonNSW Postcode 2171 State or territory New South Wales (NSW) Localities 8 Council area Liverpool Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2170 · Postcode 2172