9a Australia Street

St Marys NSW 2760

The size of St Marys is approximately 10.6 square kilometres. There are 35 parks, covering nearly 19.4% of the total area. The population of St Marys in 2016 was 12195 people. By 2021 the population was 13256 showing a population growth of 8.7% in the area during that time. The predominant age group in St Marys is 30-39 years. Households in St Marys are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in St Marys work in a machinery operators and drivers occupation.In 2021, 44.50% of the homes in St Marys were owner-occupied compared with 44.40% in 2016.

St Marys has 8,266 properties. Over the last 5 years, Houses in St Marys have seen a 37.85% increase in median value, while Units have seen a 47.26% increase. As at 31 August 2026:

• The median value for Houses in St Marys is $1,056,764 while the median value for Units is $723,545.
• Houses have a median rent of $575 while Units have a median rent of $578.