New South Wales · Postcode 2330
St Clair postcode and suburb data
New South Wales · Phone area code 02 · 167 km from Sydney
Suburb snapshot
St Clair 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 Clair ranks: household income is in the top 25% of NSW suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
St Clair vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | St Clair | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,067 ≈NSW | $1,931 | $1,836 |
| Rent/wk | $440 ≈NSW | $445 | $390 |
| Mortgage/month | $2,167 ≈NSW | $2,247 | $1,958 |
| Median age | 36 | 45.0 | 45.0 |
| SEIFA decile | 5/10 ≈NSW | 6.0/10 | 6.0/10 |
| Unemployment | 4.4% -NSW | 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.
St Clair is a locality 167 km from Sydney in New South Wales, classified as outer regional by the ABS. The postcode is 2330. It falls within the Sydney - Baulkham Hills and Hawkesbury region. The local government area is Penrith.
According to the 2021 Census, St Clair has a population of 19,942 with a median age of 36. The median weekly household income is $2,067, close to the NSW average. The unemployment rate is 4.4%, lower than the NSW average. The Indigenous population is 767 (3.8% of residents).
Housing in St Clair includes a median weekly rent of $440, median monthly mortgage repayment of $2,167, with 6,327 total dwellings. Owner-occupied dwellings (owned or mortgaged) make up 78.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, St Clair scores in decile 5 out of 10, which is around the national average.
There are 6 schools in the St Clair area, including St Clair High School, Blackwell Public School, Banks Public School and others.
St Clair is part of the Hawkesbury statistical area in New South Wales.
St Clair details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2330 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 19,942 |
| Median Age | 36 years |
| Median Household Income (Census 2021) | $2,067/week |
| Median Personal Income (Census 2021) | $849/week |
| Median Weekly Rent (Census 2021) | $440 |
| Median Monthly Mortgage (Census 2021) | $2,167 |
| Average Household Size | 3 persons |
| Area | 7.2 km² |
| Population Density | 2768/km² |
| Total Dwellings | 6,327 |
| Australian Citizens | 88.1% |
| Indigenous Population | 767 (3.8%) |
| Unemployment Rate | 4.4% |
| SEIFA IRSAD Decile | 5/10 (average) |
| Latitude | -32.3641 |
| Longitude | 151.2439173 |
| Distance from Sydney | 167 km |
| Region (SA4) | Sydney - Baulkham Hills and Hawkesbury |
| Area (SA3) | Hawkesbury |
| Local Government | Penrith |
| Federal Electorate | Hunter |
| State Electorate | Upper Hunter |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 4,171 (20.9%) |
| 15–24 years | 2,503 (12.6%) |
| 25–44 years | 5,626 (28.2%) |
| 45–64 years | 5,112 (25.6%) |
| 65+ years | 2,540 (12.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 1,723 (8.6%) |
| Arthritis | 1,601 (8.0%) |
| Diabetes | 1,322 (6.6%) |
| Heart Disease | 691 (3.5%) |
| Cancer | 444 (2.2%) |
| Lung Condition | 274 (1.4%) |
| Dementia | 66 (0.3%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 190 (3.0%) |
| 1 vehicle | 1,655 (26.5%) |
| 2 vehicles | 2,621 (41.9%) |
| 3+ vehicles | 1,784 (28.5%) |
Schools in St Clair
ACARA 2025 school profiles for schools located in St Clair. ICSEA is shown where ACARA publishes it.
Suburbs Near St Clair
Same Postcode (2330)
More St Clair 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.