Thornleigh
NSW 2120 · Hornsby
8,898 (2021) → 9,208 est. (2025) · Stable
Part of the Hornsby local government area (est. 144,237 residents)
Based on transport, liveability & education. Safety is scored separately below.
Thornleigh is a stable suburb in Hornsby, NSW 2120, about 20km from Sydney CBD. Its median house price of $1.87M is more expensive than the NSW average. The suburb has 2 schools, a transport score of 96/100, and is about 19km inland. Thornleigh has an overall score of 94/100, based on transport, liveability and education, plus a separate residential safety score of 100/100.
Demographics
Age distribution
ATO 2023-24, postcode 2120 area — postcode-level, not suburb-specific.
Top countries of birth: China (6.43%), India (3.66%), England (3.46%), South Korea (2.09%), Philippines (1.87%)
Top languages: Mandarin (7.19%), Cantonese (3.52%), Korean (2.87%), Arabic (2.73%), Hindi (1.62%)
Source: ABS Census 2021
Property
Median price history
Source: NSW Valuer General · Updated Q1 2026
Residential Safety
Recorded residential incidents (latest year), with rate per 100,000 residents:
Includes street and public-place assaults — supplementary context, not part of the safety score.
Residential incidents over time
Sum of the five residential categories above — not all recorded crime.
Area crime context
An independent score — crime data quality varies by state, so safety is shown separately and is not part of the overall score.
Source: BOCSAR · Updated March 2026
Schools
Outstanding school access
Top 20% nationally — strong, high-ICSEA schools nearby with genuine choice. An excellent suburb for families prioritising education.
Average ICSEA of schools within 10km 1120 (above the national average of 1000).
In suburb
- Thornleigh West Public SchoolPrimary · GovernmentICSEA 1142
- Normanhurst West Public SchoolPrimary · GovernmentICSEA 1136
Nearby (within 10km)
- Normanhurst Public SchoolPrimary · Government · 1.5kmICSEA 1139
- Hornsby South Public SchoolPrimary · Government · 1.7kmICSEA 1110
- Clarke Road SchoolCombined · Government · 1.8kmICSEA 1063
- Normanhurst Boys High SchoolSecondary · Government · 1.8kmICSEA 1207
- Loreto NormanhurstCombined · Independent · 1.8kmICSEA 1164
- Pennant Hills Public SchoolPrimary · Government · 1.9kmICSEA 1143
- Barker College Junior SchoolPrimary · Independent · 2.1km
- Pennant Hills High SchoolSecondary · Government · 2.2kmICSEA 1109
- St Agatha's Catholic Primary SchoolPrimary · Catholic · 2.2kmICSEA 1147
- Wahroonga Adventist SchoolCombined · Independent · 2.2kmICSEA 1161
- EOC Broken Bay - Pennant HillsPrimary · Catholic · 2.2km
- St Leo's Catholic CollegeSecondary · Catholic · 2.3kmICSEA 1113
Source: ACARA MySchool · Updated 2025
Transport
Source: TfNSW GTFS
Employment & Economy
Top local industries
Source: DEWR SALM / ABS Census 2021 · Updated SALM Mar 2026 / 2021 Census
Liveability
Amenities within 2–3km
Counted within a short distance of the suburb centre (so nearby facilities count), with the in-boundary count shown beneath.
In this suburb
Source: Bureau of Meteorology · OpenStreetMap · Healthdirect NHSD (via Geoscience Australia)
Fitness
Plenty of options
Well above average — a good spread of gyms and sports facilities within easy reach.
Facilities within 3km of the suburb centre. The Fitness Score is a national percentile of these counts per resident.
Source: OpenStreetMap
Outdoors
Some green space
Around the national average — a reasonable amount of parks and outdoor space nearby.
Within 3km of the suburb centre. The Outdoor Score is a national percentile led by parks and green space.
Source: OpenStreetMap
Culture
Rich cultural scene
Well above average — a strong mix of cultural venues nearby.
Within 3km of the suburb centre. The Culture Score is a national percentile weighting theatres, museums, galleries, libraries and arts centres most heavily.
Source: OpenStreetMap
Entertainment Scene
Not much nightlife
No licensed on-premises venues recorded in this suburb.
No licensed pubs, bars or clubs are registered in this suburb per the Liquor & Gaming NSW register.
View nearby venues on the Entertainment Map →
Source: OpenStreetMap
Childcare
Strong options nearby
Well above average for childcare services — good choice and quality, with most families finding a place without a long drive.
View childcare centres on the map →
Source: ACECQA National Quality Framework Register · Updated July 2026
Aged Care
Government-subsidised aged care services located in this suburb. Star Ratings are the official ratings for residential aged care homes.
Source: Dept of Health, Disability and Ageing · Updated May 2026 Star Ratings
Places of Worship
Mapped places of worship within 3km of the suburb centre, grouped by religion where recorded. Community mapping may not capture every congregation.
Source: OpenStreetMap
Population & Growth
StableSource: ABS ERP & NSW DPHI
Nearby suburbs in Hornsby
Compare Thornleigh with another suburb
Compare two suburbs
Frequently asked questions about Thornleigh
Is Thornleigh safe?
Thornleigh has a residential safety score of 100/100, based on residential crime (break-ins, theft from dwellings, vehicle theft, domestic assault and robbery) per resident relative to the NSW median. Its total recorded incident rate is 2,855 per 100,000 across all categories.
What are property prices in Thornleigh?
In Thornleigh, the median house price is $1.87M and the median unit price is $896K. Median weekly house rent is $900.
How far is Thornleigh from Sydney CBD?
Thornleigh is about 20.2 km from Sydney CBD, an estimated 48 minutes by public transport.
What schools are in Thornleigh?
Thornleigh has 2 schools, with an average ICSEA of 1139 (the national average is 1000). Schools are listed factually, not ranked.
What is public transport like in Thornleigh?
Thornleigh has a transport score of 96/100, including 1 train station and 88 bus stops.