Banksia is located 12 kilometres south of the Sydney central business district, in the local government area of the Bayside Council and is part of the St George area.
Banksia is named for Joseph Banks, a botanist on the Voyage of Discovery of James Cook which visited the nearby Botany Bay in 1770.
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, other businesses include hotels and various take away food shops.
A market garden is located on the eastern side of West Botany Street, close to St George Soccer Stadium. Located next to St George Stadium on the grounds of Barton Park lies the Rockdale Ilinden Sports Centre, the home of the Rockdale Ilinden Football Club, a largely Macedonian supported NSWSL soccer club.
Banksia railway station on the Eastern Suburbs & Illawarra Line of the Sydney Trains network. Banksia is also serviced by Sydney Buses routes 400 and 410 that run between Burwood and Bondi Junction via Eastgardens.