Hornsby Shire

Hornsby Shire New South Wales
Location in Metropolitan Sydney
Coordinates	33°42′S 151°06′E / 33.7°S 151.1°E / -33.7; 151.1
Population	151,811 (2021 census)[1]
• Density	333.7/km2 (864.2/sq mi)
Established	6 March 1906 (1906-03-06)
Area	455 km2 (175.7 sq mi)
Mayor	Warren Waddell (Liberal)
Council seat	Hornsby
Region	Metropolitan Sydney
State electorate(s)	Castle Hill Epping Hornsby Wahroonga
Federal division(s)	Bennelong Berowra Bradfield
Website	Hornsby Shire
LGAs around Hornsby Shire: The Hills Shire Central Coast Central Coast The Hills Shire 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.^[2]

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