The Wallumedegal Aboriginal tribe lived in the area between the Lane Cove River and Parramatta River, which was known as Walumetta.
In 1792, Governor Phillip began the granting of parcels of lands to marines, and the area was referred to on Phillip's maps as the Field of Mars, named after the Roman Field of Mars probably because of the military link. It contained the area of what is now Epping, along with the surrounding suburbs of Ryde and Marsfield.
Epping railway station was originally called 'Field of Mars' and then was changed to Carlingford. The first post office opened as East Carlingford. To avoid confusion, the postal department suggested changing the name of the railway station to East Carlingford but strong opposition led to other names being suggested such as Corella and East Lynne. In 1899 the suburb name of Epping was adopted after suggestion by a local landowner William Midson (1849-1924), after a town near Epping Forest in Essex, where his father was born.
Epping RSL club is a popular venue, which attracts many people including students from the nearby Macquarie University. Epping also has a bar (Epping Hotel) with its own nightclub 'Tracks', also popular on Wednesdays and the weekend.
Epping features some television production studios owned by the Seven Network in the south of the suburb, but production of programs has moved to Pyrmont and the News & live studios in Martin Place in the centre of the Sydney CBD. The station's former headquarters are due to close in 2009.
A North West Metro is also under planning which will link Epping to Rouse Hill via Castle Hill and to Sydney CBD via Top Ryde, New South Wales, Gladesville, New South Wales and Pyrmont.
Epping is also well-serviced by bus facilities by Sydney Buses and Hillsbus. The M2 Hills Motorway runs along the northern border to the Sydney CBD. Epping Road is a major arterial road in the area that runs east from the railway station to the Pacific Highway.

Epping is also known to be a more affluent suburb in its region, as evidenced by its higher median house prices compared to neighbouring suburbs, and the high proportion of professionals who reside in Epping (nearly double the Sydney average).