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Forest Lake 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 Forest Lake Compares
Forest Lake vs the QLD average and the national average (2021 Census, population-weighted).
| Metric | Forest Lake | QLD avg | AU avg | Greater Brisbane |
|---|---|---|---|---|
| Household income/wk | $1,921 ≈QLD | $1,770 | $1,836 | $1,945 |
| Rent/wk | $390 ≈QLD | $380 | $390 | $402 |
| Mortgage/month | $1,690 ≈QLD | $1,774 | $1,958 | $1,919 |
| Median age | 37 | 44.0 | 45.0 | 38.0 |
| SEIFA decile | 6/10 +QLD | 4.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 5.5% ≈QLD | 6.0% | 5.0% | 6.0% |
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.
Postcode 4078 covers Forest Lake, an inland suburb of Brisbane about 17 km from the city centre. It forms part of the Ipswich region of Queensland. Local government services are provided by Brisbane.
According to the 2021 Census, Forest Lake has a population of 22,676 with a median age of 37. The median weekly household income is $1,921, close to the QLD average. The unemployment rate is 5.5%. The Indigenous population is 425 (1.9% of residents).
Housing in Forest Lake includes a median weekly rent of $390, median monthly mortgage repayment of $1,690, with 7,731 total dwellings. Owner-occupied dwellings (owned or mortgaged) make up 73.4% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Forest Lake scores in decile 6 out of 10, which is around the national average.
There are 4 schools in the Forest Lake area, including Forest Lake State High School, St John's Anglican College, Grand Avenue State School and others.
Forest Lake is part of the Forest Lake - Oxley statistical area in Queensland.
Forest Lake Details
| Postcode | 4078 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 22,676 |
| Median Age | 37 years |
| Median Household Income (Census 2021) | $1,921/week |
| Median Personal Income (Census 2021) | $801/week |
| Median Weekly Rent (Census 2021) | $390 |
| Median Monthly Mortgage (Census 2021) | $1,690 |
| Average Household Size | 2.8 persons |
| Area | 9.8 km² |
| Population Density | 2309/km² |
| Total Dwellings | 7,731 |
| Australian Citizens | 83.4% |
| Indigenous Population | 425 (1.9%) |
| Unemployment Rate | 5.5% |
| SEIFA IRSAD Decile | 6/10 (average) |
| Latitude | -27.616667 |
| Longitude | 152.966667 |
| Distance from Brisbane | 17 km |
| Region (SA4) | Ipswich |
| Area (SA3) | Forest Lake - Oxley |
| Local Government | Brisbane |
| Federal Electorate | Oxley |
Age Profile
Show counts
| 0–14 years | 4,581 (20.2%) |
| 15–24 years | 3,067 (13.5%) |
| 25–44 years | 5,905 (26.0%) |
| 45–64 years | 6,135 (27.1%) |
| 65+ years | 2,984 (13.2%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 6 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Asthma | 1,876 (8.3%) |
| Arthritis | 1,782 (7.9%) |
| Diabetes | 1,233 (5.4%) |
| Heart Disease | 852 (3.8%) |
| Cancer | 569 (2.5%) |
| Lung Condition | 330 (1.5%) |
| Dementia | 175 (0.8%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 255 (3.3%) |
| 1 vehicle | 2,590 (33.8%) |
| 2 vehicles | 3,238 (42.3%) |
| 3+ vehicles | 1,574 (20.6%) |
Schools in Forest Lake
Suburbs Near Forest Lake
Same Postcode (4078)
More Forest Lake 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.