Hornsby Shire

Hornsby Shire
Coordinates: 33°42′S 151°06′E / 33.7°S 151.1°E / -33.7; 151.1
CountryAustralia
StateNew South Wales
RegionNorthern Sydney
Upper North Shore (Parts)
Established6 March 1906 (1906-03-06)
Council seatHornsby
Government
 • MayorWarren Waddell (Liberal)
 • State electorates
 • Federal division
Area
 • Total
455 km2 (176 sq mi)
Population
 • Total151,811 (2021 census)
 • Density333.7/km2 (864.2/sq mi)
WebsiteHornsby Shire
LGAs around Hornsby Shire
The Hills Central Coast Central Coast
The Hills Hornsby Shire Northern Beaches
Parramatta Ryde Ku-ring-gai

Hornsby Shire is a local government area situated on the Upper North Shore as well as parts of the Hills District, of Sydney in the state of New South Wales, Australia. The shire stretches from the M2 Hills Motorway in the south to the Hawkesbury River town of Wisemans Ferry, some 53 kilometres (33 mi) to the north, making it the largest local government council in the Greater Sydney Metropolitan region by total area. As of the 2016 census the shire had an estimated population of 142,667.

The mayor of Hornsby Shire is Cr Warren Waddell, a member of the Liberal Party, who was elected on 14 September 2024.