Greendale is in the local government area of Liverpool City Council and it is part of the Macarthur region. The area now known as Greendale was the original home of the Mulgoa tribe of the Darug people. Land grants were given out in 1811; one land owner Mary Birch named her property Greendale. Another land owner was the colony’s judge advocate – Ellis Bent Bents Basin the recreational area on the Nepean River at Greendale was named after him.
The land here was mainly used for farming wheat until 1861 when wheat rust infected the crops. Other crops were tried, unsuccessfully so the farmers moved on, effectively killing of the township. By 1929 the Churches, School, post office and baker had closed down. A bushfire in 1939 destroyed what was left of the town. To this day there is no town centre; the town remains rural with very few residents.