Birrong, is located 22 kilometres from Sydney central business district. 

Birrong features a large number of community facilities such as six soccer/rugby league fields, tennis courts, a large natural park reserve, a bowls club, and swimming pool. Birrong also has two high schools, Birrong Boys High School and Birrong Girls High School, and a primary school. A small group of shops is located on Auburn Road, featuring a barber, bakery, newsagent, IGA (including bottle shop and butcher), hair salon and florist.

The Aboriginal word Birrong meaning star, was adopted as the suburb's name around 1927.

One of the first settlers of Birrong was Joseph Hyde Potts who was granted land in the area in 1835 and has Potts Hill named after him. Development in the area of Birrong increased with the opening of the railway in 1928. Birrong Park, an area that was subject to flooding was drained as relief work during the Great Depression (1929-1934). The post office opened in 1955.

Birrong Girls High School is a public girls high school that was established as a girls' comprehensive high school in 1957. There are 820 students (2006 estimate) from a wide variety of cultural backgrounds enrolled in the school. 84% of students are from non-English speaking background (NESB) which represents 46 language groups.