Carnes Hill is a small suburb locating in the Greater Western Sydney Region of New South Wales, Australia. The 4.8 square kilometre town is administrated by the City of Liverpool, a local government area of Australia. Carnes Hill is surrounded by Hoxton Park, Prestons, Edmondson Park, Horningsea Park and West Hoxton suburbs. The postcode of Carnes Hill is 2171. Carnes Hill is located 38 kilometres west of the Sydney Central Business District, 8 kilometres west of Liverpool and 15 kilometres north of Campbelltown.
There are 6 other localities with postcode 2171. They are Cecil Hills, Elizabeth Hills, Horningsea Park, Hoxton Park, Len Waters Estate and Middleton Grange. There are many community parks and reserves in the Carnes Hill and nearby areas. Among them Bedwell Park in Horningsea Park area, Greenway Park in West Hoxton, Brownes Farm Reserve in Hoxton and Pasquale Minnici Park in Prestons are well known. According to 2011 census, of occupied private dwellings in Carnes Hill, 18.3% owned outright, 59.3% owned with a mortgage and 20.6% rented.