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Mount Sylvia Postcode
Queensland
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Mount Sylvia Compares
Mount Sylvia vs the QLD average and the national average (2021 Census, population-weighted).
| Metric | Mount Sylvia | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $939 -QLD | $1,770 | $1,836 |
| Rent/wk | $250 -QLD | $380 | $390 |
| Mortgage/month | $650 -QLD | $1,774 | $1,958 |
| Median age | 45 | 44.0 | 45.0 |
| SEIFA decile | 7/10 +QLD | 4.0/10 | 6.0/10 |
| Unemployment | 0.0% -QLD | 6.0% | 5.0% |
Green pill = at least 10% above the QLD average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Mount Sylvia is a locality 84 km from Brisbane in Queensland, classified as inner regional by the ABS. The postcode is 4343. It falls within the Toowoomba region. The local government area is Lockyer Valley.
According to the 2021 Census, Mount Sylvia has a population of 70 with a median age of 45. The median weekly household income is $939, below the QLD average.
Housing in Mount Sylvia includes a median weekly rent of $250, median monthly mortgage repayment of $650, with 25 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 87.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Mount Sylvia scores in decile 7 out of 10, which is above the national average.
Mount Sylvia is served by Mount Sylvia State School.
Mount Sylvia is part of the Toowoomba statistical area in Queensland.
Mount Sylvia Details
| Postcode | 4343 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 70 |
| Median Age | 45 years |
| Median Household Income (Census 2021) | $939/week |
| Median Personal Income (Census 2021) | $442/week |
| Median Weekly Rent (Census 2021) | $250 |
| Median Monthly Mortgage (Census 2021) | $650 |
| Average Household Size | 2.4 persons |
| Area | 41.1 km² |
| Population Density | 2/km² |
| Total Dwellings | 25 |
| Australian Citizens | 77.1% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 7/10 (above average) |
| Latitude | -27.7257552 |
| Longitude | 152.2194183 |
| Distance from Brisbane | 84 km |
| Region (SA4) | Toowoomba |
| Area (SA3) | Toowoomba |
| Local Government | Lockyer Valley |
| Federal Electorate | Wright |
Age Profile
Show counts
| 0–14 years | 9 (12.9%) |
| 15–24 years | 15 (21.4%) |
| 25–44 years | 9 (12.9%) |
| 45–64 years | 25 (35.7%) |
| 65+ years | 19 (27.1%) |
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)
| Arthritis | 10 (14.3%) |
| Diabetes | 5 (7.1%) |
| Lung Condition | 5 (7.1%) |
| Asthma | 4 (5.7%) |
| Heart Disease | 3 (4.3%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 4 (16.7%) |
| 2 vehicles | 6 (25.0%) |
| 3+ vehicles | 14 (58.3%) |
Schools in Mount Sylvia
Suburbs Near Mount Sylvia
Same Postcode (4343)
More Mount Sylvia 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.