New South Wales · Postcode 2760
St Marys postcode and suburb data
New South Wales · Phone area code 02 · 42 km from Sydney
Suburb snapshot
St Marys at a glance vs NSW
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against NSW
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where St Marys ranks: SEIFA decile 2 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
St Marys vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | St Marys | NSW avg | AU avg | Greater Sydney |
|---|---|---|---|---|
| Household income/wk | $1,437 -NSW | $1,931 | $1,836 | $2,181 |
| Rent/wk | $365 -NSW | $445 | $390 | $506 |
| Mortgage/month | $1,847 -NSW | $2,247 | $1,958 | $2,587 |
| Median age | 34 | 45.0 | 45.0 | 39.0 |
| SEIFA decile | 2/10 -NSW | 6.0/10 | 6.0/10 | 10.0/10 |
| Unemployment | 7.2% +NSW | 5.0% | 5.0% | 5.0% |
Green pill = at least 10% above the NSW average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Postcode 2760 covers St Marys, an inland suburb of Sydney about 42 km from the city centre. It forms part of the Sydney - Outer West and Blue Mountains region of New South Wales. Local government services are provided by Penrith.
According to the 2021 Census, St Marys has a population of 13,256 with a median age of 34. The median weekly household income is $1,437, below the NSW average. The unemployment rate is 7.2%, higher than the NSW average. The Indigenous population is 605 (4.6% of residents).
Housing in St Marys includes a median weekly rent of $365, median monthly mortgage repayment of $1,847, with 4,771 total dwellings. Housing costs in the area sit below the NSW average. Rental properties account for 54.2% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, St Marys scores in decile 2 out of 10, which is well below the national average.
There are 7 schools in the St Marys area, including St Marys Senior High School, Colyton High School, Oxley Park Public School and others.
St Marys is part of the St Marys statistical area in New South Wales.
St Marys details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2760 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 13,256 |
| Median Age | 34 years |
| Median Household Income (Census 2021) | $1,437/week |
| Median Personal Income (Census 2021) | $754/week |
| Median Weekly Rent (Census 2021) | $365 |
| Median Monthly Mortgage (Census 2021) | $1,847 |
| Average Household Size | 2.5 persons |
| Area | 9.7 km² |
| Population Density | 1367/km² |
| Total Dwellings | 4,771 |
| Australian Citizens | 76.6% |
| Indigenous Population | 605 (4.6%) |
| Unemployment Rate | 7.2% |
| SEIFA IRSAD Decile | 2/10 (well below average) |
| Latitude | -33.769979 |
| Longitude | 150.7734575 |
| Distance from Sydney | 42 km |
| Region (SA4) | Sydney - Outer West and Blue Mountains |
| Area (SA3) | St Marys |
| Local Government | Penrith |
| Federal Electorate | Lindsay |
| State Electorate | Londonderry |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 2,827 (21.3%) |
| 15–24 years | 1,566 (11.8%) |
| 25–44 years | 4,224 (31.9%) |
| 45–64 years | 2,979 (22.5%) |
| 65+ years | 1,677 (12.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 1,176 (8.9%) |
| Arthritis | 1,053 (7.9%) |
| Diabetes | 832 (6.3%) |
| Heart Disease | 477 (3.6%) |
| Cancer | 276 (2.1%) |
| Lung Condition | 265 (2.0%) |
| Dementia | 49 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 582 (12.5%) |
| 1 vehicle | 2,153 (46.2%) |
| 2 vehicles | 1,403 (30.1%) |
| 3+ vehicles | 527 (11.3%) |
Schools in St Marys
ACARA 2025 school profiles for schools located in St Marys. ICSEA is shown where ACARA publishes it.
Suburbs Near St Marys
Same Postcode (2760)
More St Marys Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.