Hills District

The Hills District (alternatively, the Hills Shire, the Hills, or Sydney Hills, previously Baulkham Hills Shire, the Garden Shire) is a general term for the north-western suburbs of Sydney, in the state of New South Wales, Australia. Its constituent suburbs are generally located within the local government area of The Hills Shire; some parts of the Hornsby Shire are also included in the area that is given the title the Hills District.

Actual suburbs and localities that are considered to be in the Hills District can be somewhat amorphous and variable according to who is doing the listing. For example, the Hills District Historical Society restricts its definition to the Hills Shire local government area, yet its study area extends from Parramatta to the Hawkesbury. At its most generous, the term Hills District is applied to the area generally west of Pennant Hills Road and north of Windsor Road, extending out as far as Boundary Road Vineyard (the western boundary of the Hills Shire). Generally, residents of West Pennant Hills think of themselves as being in the Hills District, however those in Pennant Hills, Thornleigh and Westleigh are more likely to think of themselves as being part of the North Shore or Northern Suburbs.