St Clair is an established suburb in New South Wales within the Penrith local government area (postcode 2759). It is home to about 19,942 residents, with a blend of families and working-age professionals and a median age of 36. Households earn a median income of $107K per year, with an average household size of 3 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 current median weekly rent is $730. The median monthly mortgage repayment is $2,167.
St Clair is served by 6 schools, including 5 primary, 1 secondary. The average ICSEA score is 984, which is around the national average of 1,000. The crime rate in the Penrith LGA is below average at 3,984 incidents per 100,000 population.
From an investment perspective, 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.