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Queensland · Postcode 4306
Ironbark postcode and suburb data
Queensland · Phone area code 07 · 36 km from Brisbane
Suburb snapshot
Ironbark at a glance vs QLD
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against QLD
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Ironbark ranks: household income is in the top 25% of QLD suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Ironbark vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Ironbark | QLD avg | AU avg | Greater Brisbane |
|---|---|---|---|---|
| Household income/wk | $2,075 +QLD | $1,770 | $1,836 | $1,945 |
| Rent/wk | $325 -QLD | $380 | $390 | $402 |
| Mortgage/month | $1,659 ≈QLD | $1,774 | $1,958 | $1,919 |
| Median age | 34 | 44.0 | 45.0 | 38.0 |
| SEIFA decile | 5/10 ≈QLD | 4.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 4.7% -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.
Ironbark is a locality 36 km from Brisbane in Queensland, classified as inner regional by the ABS. The postcode is 4306. It falls within the Ipswich region. The local government area is Ipswich.
According to the 2021 Census, Ironbark has a population of 1,173 with a median age of 34. The median weekly household income is $2,075, above the QLD average. The unemployment rate is 4.7%, lower than the QLD average. The Indigenous population is 221 (18.8% of residents).
Housing in Ironbark includes a median weekly rent of $325, median monthly mortgage repayment of $1,659, with 118 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 89.9% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Ironbark scores in decile 5 out of 10, which is around the national average.
Ironbark is part of the Ipswich Inner statistical area in Queensland.
Ironbark details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4306 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 1,173 |
| Median Age | 34 years |
| Median Household Income (Census 2021) | $2,075/week |
| Median Personal Income (Census 2021) | $746/week |
| Median Weekly Rent (Census 2021) | $325 |
| Median Monthly Mortgage (Census 2021) | $1,659 |
| Average Household Size | 2.9 persons |
| Area | 15.1 km² |
| Population Density | 78/km² |
| Total Dwellings | 118 |
| Australian Citizens | 27.1% |
| Indigenous Population | 221 (18.8%) |
| Unemployment Rate | 4.7% |
| SEIFA IRSAD Decile | 5/10 (average) |
| Latitude | -27.555278 |
| Longitude | 152.674722 |
| Distance from Brisbane | 36 km |
| Region (SA4) | Ipswich |
| Area (SA3) | Ipswich Inner |
| Local Government | Ipswich |
| Federal Electorate | Blair |
| State Electorate | Scenic Rim |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 51 (4.3%) |
| 15–24 years | 166 (14.2%) |
| 25–44 years | 641 (54.6%) |
| 45–64 years | 234 (19.9%) |
| 65+ years | 69 (5.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 37 (3.2%) |
| Arthritis | 34 (2.9%) |
| Diabetes | 22 (1.9%) |
| Lung Condition | 13 (1.1%) |
| Heart Disease | 12 (1.0%) |
| Cancer | 11 (0.9%) |
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 | 19 (16.1%) |
| 2 vehicles | 40 (33.9%) |
| 3+ vehicles | 59 (50.0%) |
Suburbs Near Ironbark
Same Postcode (4306)
More Ironbark 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.