6 Morris Avenue

Thornleigh NSW 2120

The size of Thornleigh is approximately 3.9 square kilometres. It has 21 parks covering nearly 19.2% of total area. The population of Thornleigh in 2016 was 8464 people. By 2021 the population was 8898 showing a population growth of 5.1% in the area during that time. The predominant age group in Thornleigh is 40-49 years. Households in Thornleigh are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Thornleigh work in a professional occupation.In 2021, 74.60% of the homes in Thornleigh were owner-occupied compared with 77.90% in 2016.

Thornleigh has 4,024 properties. Over the last 5 years, Houses in Thornleigh have seen a 35.74% increase in median value, while Units have seen a -10.45% decrease. As at 28 February 2026:

• The median value for Houses in Thornleigh is $1,886,617 while the median value for Units is $876,723.
• Houses have a median rent of $863 while Units have a median rent of $750.