St Marys is a well-established suburb in New South Wales within the Penrith local government area (postcode 2760). The area has roughly 13,256 residents and a mix of families and early-career residents, with a median age of 34. Households earn a median income of $75K per year, with an average household size of 2.5 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +1.2% year-on-year at the LGA level. NSW employment has moved +1.2% year-on-year in the official ABS Labour Force trend series, which provides the broader jobs backdrop for this suburb. NSW also had 35 Commonwealth-backed major projects under construction, 17 underway, and 67 in planning as at 2025-09-01, which is useful as a broader delivery backdrop rather than a suburb-specific project count. The most common occupations are machinery operators & drivers, clerical & administrative, professionals. Employment in the area leans toward healthcare and retail trade. The top ancestries reported are Australian, English, Filipino.
The median house price in St Marys is $1.2 million, having grown strongly by 9.7% over the past year. Units have a median price of $824,000 (+16% YoY). The current median weekly rent is $590. This gives a gross rental yield of approximately 2.6%. The median monthly mortgage repayment is $1,847.
St Marys is served by 7 schools, including 4 primary, 2 secondary, 1 special. The average ICSEA score is 956, which is around the national average of 1,000. Public transport access includes 73 bus stops. The crime rate in the Penrith LGA is below average at 3,984 incidents per 100,000 population.
From an investment perspective, Gross rental yield sits at around 2.6% (low yield). Property prices are near the state median ($1.2M/$1.5M). The price-to-income ratio of 15.7x is considered stretched. House prices have moved +9.7% year-on-year. Population growth of +1.2% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.