Greenfield Park is located 36 kilometres west of the Sydney central business district in the local government area of the City of Fairfield.

Greenfield Park was named after a major road that cuts through the Council Ward of St Johns.

[3] Greenfield Park is home to St Hurmizd Cathedral, Australia's largest Assyrian church.

The top religious affiliations were Catholicism 37.2%, Assyrian Church of the East (17.6%), Buddhism (13.5%), No religion (9.5%) and Christian, nfd (no further definition) (5.5%).

Notably, route 804 links residents of Greenfield Park to both the Liverpool and Parramatta commercial areas.