Glenorie is located 44 kilometers north west of the Sydney central business district; it is in the local government area of the Hills Shire and is part of the Hills District. The Durag people were the original inhabitants of the Glenorie region, and were also known to inhabit most of the greater Sydney region.
Glenorie was originally part of the Dural area and also later known as North Dural. This caused some confusion for the post office, so a local resident William Black in April 1884 offered the local postmaster a choice of two names for the area. Glenorie and Hazeldene. Glenorie was named after a town in Scotland, it was chosen as the local progress association had supported it as a new name. Glenorie has still been able to keep its rural charm, despite being next to some of Sydney’s major suburbs such as Hornsby and Castle Hill. Both offer its rural neighbour all the necessary services.