Thornleigh

Thornleigh
Federation style home, Station Street
Thornleigh
Interactive map of Thornleigh
CountryAustralia
StateNew South Wales
CitySydney
LGA
Location
Established1830s
Government
 • State electorate
 • Federal division
Area
 • Total
4 km2 (1.5 sq mi)
Elevation
170 m (560 ft)
Population
 • Total8,898 (2021 census)
 • Density2,220/km2 (5,800/sq mi)
Postcode
2120
Suburbs around Thornleigh
Westleigh Hornsby Hornsby
Westleigh Thornleigh Normanhurst
Wahroonga
Pennant Hills Pennant Hills Turramurra

Thornleigh is a suburb in the Upper North Shore region of Sydney in the state of New South Wales, Australia. Thornleigh is located 22 kilometres north-west of the Sydney central business district in the local government area of Hornsby Shire. The source of the Lane Cove River is located in Thornleigh.