Banksia is a suburb in southern Sydney and is located 12 kilometers south of the Sydney Central Business District in the local government area of the City of Rockdale and is part of the St George area.

Banksia is mainly residential with a few commercial developments. It features mostly low density houses and some medium density blocks of flats. Banksia shopping centre consists of a small group of shops on Railway Street beside Banksia railway station. It includes Banksia Bakery, a take-away shop, a convenience store, chemist, Australia Post and a number of hairdressers.

More shops and commercial developments are located on the Princes Highway. This commercial area extends to the adjacent suburbs of Arncliffe and Rockdale. Many of the commercial developments are part of an automotive precinct featuring car yards, auto accessory retailers, tyre shops and auto repairers. The Rocksia Hotel is a large venue on the Princes Highway that features a bistro, gaming area and nightclub. Other businesses located here include the Banksia Hotel, a KFC restaurant and a popular take-away shop called Brothers Kebabs.

A market garden is located on the eastern side of West Botany Street, close to St George Soccer stadium.