Thornleigh, New South Wales — interactive Google street map, satellite and terrain views, Street View, live local weather conditions and 7-day forecasts, real-time local and world news, and an editorial description of Thornleigh, in The Council Of The Shire Of Hornsby local government area.
| Locality | Thornleigh |
| State | New South Wales (NSW) |
| Local Government Area | The Council Of The Shire Of Hornsby |
| Country | Australia |
| Timezone | Australian Eastern Time (AEST/AEDT) |
| Remoteness | Major Cities of Australia |
| Latitude | -33.72224 |
| Longitude | 151.08237 |
| Population | 8,395 |
| Density | 2169.3 /km² |
| Area | 3.9 km² |
| Elevation | 171 m |
| Postcode | 2120 |
| Area Code | 02 |
| Distance to Sydney | 20 km northwest |
Thornleigh is a locality in The Council Of The Shire Of Hornsby local government area of New South Wales, Australia. It has a population of approximately 8,395. The locality covers an area of 3.9 km², giving a population density of about 2169.3 people per km². It sits at an elevation of around 171 m above sea level. It lies approximately 20 km northwest of Sydney. Thornleigh is located at 33.7222°S, 151.0824°E. It observes Australian Eastern Time (AEST/AEDT). Postcode: 2120.
Thornleigh rests in a landscape of sandstone ridges and eucalypt woodlands, its character shaped by the gentle undulations of the land which slope towards the Georges River. It lies 3.0 km south-south-west of Hornsby, NSW (from Hornsby, NSW: bearing 203°T), and is situated 7.7 km east of Castle Hill. The air here, especially after a summer rain, carries the damp, earthy scent of the bush, a subtle perfume that mingles with the scent of blooming jacarandas in spring. Sunlight filters through the broad leaves of the gum trees, casting shifting patterns on the ochre-coloured soil, and the quiet hum of cicadas forms a constant, almost hypnotic soundtrack to the day. Even in the heart of Thornleigh, the wildness of the surrounding country feels close, a constant reminder of the ancient geology beneath the suburban sprawl.
The story of Thornleigh is one of agricultural beginnings, with early settlers clearing the land for orchards and dairies, their labour etched into the very contours of the hills. Later, as the railway line pushed north, Thornleigh emerged as a convenient stop, its economy gradually shifting from farm produce to the needs of a growing residential population, serving as a vital commuter hub for those working in the larger centres. Evidence of this transition can still be seen in the occasional older farmhouse remnants, standing stoically against the modern brick veneer. The local centre, with its mix of shops and services, acts as the beating heart of Thornleigh, a place where neighbours greet each other, a quiet continuity in the ebb and flow of daily life.
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This page provides an interactive Google map of Thornleigh, New South Wales with street, satellite and terrain views and integrated Street View imagery. Live weather conditions with current observations and a 7-day forecast are powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while an editorially written description provides background on Thornleigh, in The Council Of The Shire Of Hornsby local government area.
Detailed location data for Thornleigh includes the postcode (2120), telephone area code (02), and local government area (The Council Of The Shire Of Hornsby), with an ABS remoteness classification of Major Cities of Australia. These are among the most commonly searched location details for any Australian city, town or locality.
Location data is drawn from Geoscape Administrative Boundaries (GDA2020) and enriched with GeoNames and Australian Bureau of Statistics data, matched by coordinate proximity — ensuring the correct Thornleigh is identified even where the name is shared across multiple localities.
| Page generated | June 2026 |
| Location data | Geoscape Administrative Boundaries (GDA2020); enriched with GeoNames and ABS 2021 Census data, matched by coordinate proximity |
| Description | Editorial description generated with AI assistance from verified Geoscape, ABS and GeoNames location data. |