Killarney Heights is a suburb of northern Sydney, situated on Middle Harbour, in the state of New South Wales, Australia. Killarney Heights is 12 kilometres north-east of the Sydney CBD in the local government area of Northern Beaches Council.
Easy access to the northern beaches, Chatswood, City and North, this suburb is very popular among families and young couples seeking a casual lifestyle. Super popular schooling for both Primary and High School, this tree lines suburb is has this not finished?

References:
Google maps
Wikipedia