Thornleigh
NSW 2120 • Greater Sydney
About Thornleigh
Thornleigh is a leafy suburb on Sydney's Upper North Shore, located 22 kilometres north-west of the CBD within the Hornsby Shire. With a population of approximately 8,900 and a density of around 2,220 people per square kilometre, it is a well-established residential area dating back to the 1830s. The suburb sits at an elevation of 170 metres and is characterised by its mix of Federation-era homes, mid-century residences, and modern developments. Thornleigh has a family-oriented demographic with good schools and a strong community feel.
Thornleigh offers a bushland-meets-suburban lifestyle, bordered by the Lane Cove National Park to the south-west. The suburb has its own train station, local shops along Pennant Hills Road, and the popular Thornleigh Brickpit sports complex. Residents enjoy proximity to Hornsby Westfield for major shopping and a range of bush walking tracks in the surrounding national parks. The area is popular with families seeking quality schools, green spaces, and a quieter pace while maintaining an easy commute to the city.
Thornleigh falls under postcode 2120 and is governed by Hornsby Council (LGA). For state elections, residents vote in the Wahroonga electorate.
Location
Transport & Commute
Nearest Train Stations
Bus Services
- 586, 587 — Hornsby via Pennant Hills Road 10-15 min
- 600 — Parramatta via Carlingford 35-45 min
Commute to Sydney CBD
🛣️ Thornleigh Station provides direct trains to Central; M2 motorway nearby for driving
Local shops and the train station are accessible on foot from most parts of the suburb, though hilly terrain can make walking challenging.
Supermarkets Nearby
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Woolworths261 Pennant Hills Road Thornleigh 2120 NSW -
ALDI275 - 291 Pennant Hills Road, Thornleigh NSW 2120
Schools
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449D Pennant Hills Rd
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Pennant Hills High School ICSEA 11099473 5000 Laurence St
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Pennant Hills Public School ICSEA 11432 campus is located at 27 Trebor Road
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7 Trebor Road
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Normanhurst West Public School ICSEA 1136Dartford Rd
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Thornleigh West Public School ICSEA 11429484 4242 Giblett Ave
Crime Statistics
NSW crime data is provided by the Bureau of Crime Statistics and Research (BOCSAR). Use the interactive tool below to explore recorded crime incidents in Thornleigh by offence type, year and trend.
📊 View Thornleigh Crime Statistics on BOCSAR ↗Data source: NSW Bureau of Crime Statistics and Research · Search for "Thornleigh" under Suburb
Housing 2021 Census
67 state housing + 42 community housing dwellings (ABS 2021 Census)
Educational Institution Attending 2021 Census
School Sector Breakdown
Demographics
Population Growth
Gender Distribution (Census 2021)
Income Comparison
Country of Birth 2021 Census
Top Countries of Birth (excl. Australia)
- 1. China 572
- 2. India 326
- 3. England 308
- 4. South Korea 186
- 5. Philippines 166
- 6. Hong Kong 130
- 7. New Zealand 129
- 8. Iran 119
- 9. Lebanon 105
- 10. South Africa 97
Ancestry 2021 Census
Top ancestries reported (people may report up to two)