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Mount Saint Thomas Postcode
New South Wales
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Mount Saint Thomas Compares
Mount Saint Thomas vs the NSW average and the national average (2021 Census, population-weighted).
| Metric | Mount Saint Thomas | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,835 ≈NSW | $1,931 | $1,836 |
| Rent/wk | $300 -NSW | $445 | $390 |
| Mortgage/month | $2,167 ≈NSW | $2,247 | $1,958 |
| Median age | 37 | 45.0 | 45.0 |
| SEIFA decile | 7/10 ≈NSW | 6.0/10 | 6.0/10 |
| Unemployment | 4.3% -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.
Mount Saint Thomas (2500) is a coastal town in regional New South Wales. It lies around 71 km from Sydney by road. The locality is part of the Wollongong statistical area. It is administered by Wollongong.
According to the 2021 Census, Mount Saint Thomas has a population of 1,449 with a median age of 37. The median weekly household income is $1,835, close to the NSW average. The unemployment rate is 4.3%, lower than the NSW average. The Indigenous population is 44 (3.0% of residents).
Housing in Mount Saint Thomas includes a median weekly rent of $300, median monthly mortgage repayment of $2,167, with 549 total dwellings. Housing costs in the area sit below the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 72.5% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Mount Saint Thomas scores in decile 7 out of 10, which is above the national average.
Mount Saint Thomas is part of the Wollongong statistical area in New South Wales.
Mount Saint Thomas Details
| Postcode | 2500 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 1,449 |
| Median Age | 37 years |
| Median Household Income (Census 2021) | $1,835/week |
| Median Personal Income (Census 2021) | $819/week |
| Median Weekly Rent (Census 2021) | $300 |
| Median Monthly Mortgage (Census 2021) | $2,167 |
| Average Household Size | 2.6 persons |
| Area | 0.5 km² |
| Population Density | 2686/km² |
| Total Dwellings | 549 |
| Australian Citizens | 90.5% |
| Indigenous Population | 44 (3.0%) |
| Unemployment Rate | 4.3% |
| SEIFA IRSAD Decile | 7/10 (above average) |
| Latitude | -34.4412141 |
| Longitude | 150.8718397 |
| Distance from Sydney | 71 km |
| Region (SA4) | Illawarra |
| Area (SA3) | Wollongong |
| Local Government | Wollongong |
| Federal Electorate | Cunningham |
Age Profile
Show counts
| 0–14 years | 282 (19.5%) |
| 15–24 years | 178 (12.3%) |
| 25–44 years | 409 (28.2%) |
| 45–64 years | 375 (25.9%) |
| 65+ years | 204 (14.1%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 7 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Asthma | 140 (9.7%) |
| Arthritis | 130 (9.0%) |
| Diabetes | 84 (5.8%) |
| Heart Disease | 56 (3.9%) |
| Lung Condition | 28 (1.9%) |
| Cancer | 25 (1.7%) |
| Dementia | 6 (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 | 35 (6.5%) |
| 1 vehicle | 205 (37.8%) |
| 2 vehicles | 213 (39.3%) |
| 3+ vehicles | 89 (16.4%) |
Suburbs Near Mount Saint Thomas
Same Postcode (2500)
More Mount Saint Thomas 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.