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 $1.94M 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
Housing tenure
- Owned
- Mortgage
- Rented
Commute to work
- Car
- Public transport
- Walk/cycle
- Work from home
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 Q4 2025
Residential Safety
Recorded residential incidents (latest year), with rate per 100,000 residents:
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 2025
Schools
Average ICSEA of schools within 10km 1120 (above the national average of 1000).
In suburb
- Normanhurst West Public SchoolPrimary · GovernmentICSEA 1140
- Thornleigh West Public SchoolPrimary · GovernmentICSEA 1134
Nearby (within 10km)
- Normanhurst Public SchoolPrimary · Government · 1.4kmICSEA 1144
- Hornsby South Public SchoolPrimary · Government · 1.7kmICSEA 1103
- Clarke Road SchoolCombined · Government · 1.8kmICSEA 1046
- Normanhurst Boys High SchoolSecondary · Government · 1.8kmICSEA 1193
- Loreto NormanhurstCombined · Independent · 1.8kmICSEA 1156
- Pennant Hills Public SchoolPrimary · Government · 1.9kmICSEA 1147
- Barker College Junior SchoolPrimary · Independent · 2.1km
- Pennant Hills High SchoolSecondary · Government · 2.2kmICSEA 1105
- Our Lady Help of Christians Catholic Primary SchoolPrimary · Catholic · 2.2kmICSEA 1156
- St Agatha's Catholic Primary SchoolPrimary · Catholic · 2.2kmICSEA 1132
- Wahroonga Adventist SchoolCombined · Independent · 2.2kmICSEA 1151
- St Leo's Catholic CollegeSecondary · Catholic · 2.3kmICSEA 1110
Source: ACARA 2023
Transport
Source: TfNSW GTFS
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.
Source: Bureau of Meteorology · 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 3,664 per 100,000 across all categories.
What are property prices in Thornleigh?
In Thornleigh, the median house price is $1.94M and the median unit price is $1.09M. 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 1137 (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.