Killara is a suburb on the Upper North Shore of Sydney in the state of New South Wales, Australia 14 kilometres north of the Sydney Central Business District in the local government area of Ku-ring-gai Council.
Due to the suburb originally being planned to have no commercial use there are a limited number of shops in the area. The Killara post office opened in 1907 and with further developments there are now several commercial developments located along the length of the Pacific Highway, including the Greengate Hotel. A small group of shops are located on Marian Street, close to Killara railway station.
Killara is served by two top ranking public primary schools, Killara Public School and Beaumont Road Public School. The suburb is also home to Killara High School, the highest performing non-selective government secondary school in the state of New South Wales.
The majority of residential properties are built in the Federation and Californian Bungalow styles, although the suburb includes many other styles. The Harry and Penelope Seidler House at 13 Kalang Avenue was designed by famous architect Harry Seidler with the help of his wife Penelope and Penelope Seidler. The 1960s-era modern-design home, constructed with reinforced masonry walls, concrete floors and roof, rubble-stone retaining walls and fireplace, won the Wilkinson Award in 1967. The house is now heritage listed.