The City of Parramatta, also known as Parramatta Council, is a local government area located to the west and north-west of Sydney CBD in the Greater Western Sydney region. Parramatta Council is situated between the City of Ryde and Cumberland, where the Cumberland Plain meets the Hornsby Plateau, approximately 25 kilometres (16 mi) west of the Sydney central business district, in New South Wales, Australia. The city occupies an area of 84 square kilometres (32 sq mi) spanning across suburbs in Greater Western Sydney including the Hills District, and a small section of Northern Sydney to the far north east of its area. According to the 2016 census, City of Parramatta had an estimated population of 226,149. The city houses the Parramatta central business district which is one of the key suburban employment destinations for the region of Greater Western Sydney.

Greater Western Sydney (GWS) is a large region of the metropolitan area of Greater Sydney, New South Wales (NSW), Australia that generally embraces the north-west, south-west, central-west, far western and the Blue Mountains sub-regions within Sydney's metropolitan area and encompasses 11 local government areas: Blacktown, Blue Mountains, Camden, Campbelltown, Cumberland, Fairfield, Hawkesbury, Liverpool, Parramatta, Penrith and Wollondilly. It includes Western Sydney, which has a number of different definitions, although the one consistently used is the region composed of ten local government authorities, most of which are members of the Western Sydney Regional Organisation of Councils (WSROC). The NSW Government's Office of Western Sydney calls the region "Greater Western Sydney".