104a Monfarville St

St Marys NSW 2760

The size of St Marys is approximately 10.6 square kilometres. It has 35 parks covering nearly 19.4% of 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 8,177 properties. Over the last 5 years, Houses in St Marys have seen a 85.82% increase in median value, while Units have seen a 53.18% increase. As at 30 November 2025:

• The median value for Houses in St Marys is $1,106,858 while the median value for Units is $695,126.
• Houses have a median rent of $550 while Units have a median rent of $550.